Like the title says. Guard villagers arent spawning. Current version is 1.16.5 Forge version is forge-36.2.22

Can I see your mod list?

file:///C:/Users/caleb/curseforge/minecraft/Instances/Better%20Minecraft%20[FORGE]%20-%201.16.5/modlist.html
Tiny Skeletons [Forge] (by Fuzs_)
XP Tome (by bl4ckscor3)
CaveBiomeAPI [Forge] (by blackgear27)
Just Enough Resources (JER) (by way2muchnoise)
Serene Seasons (by TheAdubbz)
Polymorph (Forge) (by TheIllusiveC4)
RevampedWolf (by bagu_chan500)
Simple Storage Network (by Lothrazar)
In Control! (by McJty)
Collective (Forge) (by Serilum)
Structure Gel API (by ModdingLegacy)
Darker Depths (by naterbobber)
RoadRunner (by MaxNeedsSnacks)
BetterF3 (by cominixo)
Omnis (by theOGQueso)
Easy Magic [Forge] (by Fuzs_)
The Abyss: Chapter II (by y4z0n)
Bayou Blues (Forge) (by team_aurora_modding)
JEI Enchantment Info (by Phylogeny)
Stoneholm, Underground Villages (Forge) (by TheGrimsey)
Combustive Fishing (by TheIllusiveC4)
FTB Library (Forge) (by FTB)
Snow! Real Magic! ⛄ (by Snownee_)
FancyMenu [Forge] (by Keksuccino)
spark (by Iucko)
FTB Teams (Forge) (by FTB)
Enhanced Celestials - Blood, Blue, & Harvest (Super) Moons (by Corgi_Taco)
Fast Furnace minus Replacement (by tfarecnim)
Bamboo Blocks (by TeamAbnormals)
Frozen Up (by ninnih_)
Outvoted (by HowBoutNo)
Buzzier Bees (by TeamAbnormals)
Kiwi 🥝 (Forge) (by Snownee_)
Simple Discord Rich Presence (by Sunekaer)
Additional Banners (by DarkhaxDev)
Caves & Cliffs Backport (Additions) (by jukitita)
Nether's Delight (by lumpazl)
Decorative Blocks modded compat (by Evo_934)
Farmer's Delight Cookbook Addon [0.4 is the last update] (by dalumma)
Blueprint (by TeamAbnormals)
Better Badlands (by team_aurora_modding)
Tree Harvester (Forge) (by Serilum)
Extended Mushrooms (by thecech12)
Repurposed Structures (Forge) (by telepathicgrunt)
Waystones (by BlayTheNinth)
CleanCut (by Rongmario)
Comforts (Forge) (by TheIllusiveC4)
Skin Layers 3D (Fabric/Forge) (by tr9zw)
Differentiate (by eltrutlikes)
Better Advancements (by way2muchnoise)
Equipment Compare (by Grend_G)
Dungeons Plus (by ModdingLegacy)
The Conjurer (by ModdingLegacy)
Bookshelf (by DarkhaxDev)
Void Totem (by Affehund)
L_Ender 's Cataclysm (by mcl_ender)
KleeSlabs (by BlayTheNinth)
Upgraded Netherite (by Rolfmao25)
Infernal Expansion (by InfernalStudios)
Earth Mobs (by bagu_chan500)
Enchant With Mob (by bagu_chan500)
Catalogue (by MrCrayfish)
Lazy DataFixerUpper(LazyDFU) [FORGE] (by Corgi_Taco)
Better Mods Button [Forge] (by Fuzs_)
OpenBlocks Elevator (by vsngarcia)
New Ores (by doodooxyz)
JustTimm's Vanilla Additions Dark GUI Add-On (by justtimmnl)
Dynamic View[Forge/Fabric] (by someaddon)
Savage & Ravage (by TeamAbnormals)
Krypton Reforged (by TeamDeusVult)
Dark Paintings (by DarkhaxDev)
Sulfuric (by someoneelsewastaken)
The Endergetic Expansion (by TeamAbnormals)
FTB Backups (Forge) (by FTB)
Tips (by DarkhaxDev)
Client Tweaks (by BlayTheNinth)
YUNG's API (Forge) (by YUNGNICKYOUNG)
Corpse (by henkelmax)
Environmental (by TeamAbnormals)
Carry On (by Tschipp)
Armor Toughness Bar (by tfarecnim)
🔨 Crumbs (Forge) (by Trikzon)
Curious Elytra (Forge) (by TheIllusiveC4)
Chocolate Fix (by AlcatrazEscapee)
Dragon Mounts: Legacy (by WolfSh0tz)
JEI Professions (by pau101)
Magnesium (by someoneelsewastaken)
Curios API (Forge) (by TheIllusiveC4)
Caves & Cliffs Backport (by blackgear27)
Item Highlighter (by Grend_G)
Unnamed Animal Mod (by Coda1552)
CraftTweaker (by Jaredlll08)
Masonry (by Shadowclaimer)
Wandering Bag (by Furti_Two)
When Dungeons Arise - Forge! (by Aureljz)
Oh The Biomes You'll Go (by AOCAWOL)
Stalwart Dungeons (by Furti_Two)
Hunter illager (by bagu_chan500)
Craftable Deeds (by Ellpeck)
MorePaths (by Belkorin)
xali's Enchanted Books (by xalixilax)
Farmer's Delight (by vectorwing)
Traveler's Titles (Forge) (by YUNGNICKYOUNG)
Quark (by Vazkii)
AutoRegLib (by Vazkii)
Torchmaster (by xalcon)
Nourished Nether (by MuffinsDev)
Architectury API (Forge) (by shedaniel)
Paintings ++ (by AbsolemJackdaw)
Falling Leaves (Forge) (by Cheaterpaul)
Xaero's World Map (by xaero96)
Obfuscate (by MrCrayfish)
BetterEnd Reforked (by someoneelsewastaken)
Nether Agriculture (by NetherDon_)
Custom Starter Gear (by brandon3055)
Puzzles Lib [Forge] (by Fuzs_)
Controlling (by Jaredlll08)
Maiden's Merrymaking - A Christmas and Winter Holiday Mod (by maideniles)
Magnesium Dynamic Lights (by TeamDeusVult)
Village Artifacts (by Lothrazar)
Immersive Cooking (by CrimsonDragonRider)
Improved Backpacks (by DreenDexTwitch)
Cuneiform (by azmalent)
Nature Expansion (by Ddx11__)
Illagers Wear Armor (by almightytallestred)
YUNG's Better Mineshafts (Forge) (by YUNGNICKYOUNG)
Additional Bars [FORGE] (by Gamma1772)
Nether's Exoticism (by Furti_Two)
Enchantment Descriptions (by DarkhaxDev)
FTB Quests (Forge) (by FTB)
AttributeFix (by DarkhaxDev)
Atmospheric (by TeamAbnormals)
Konkrete [Forge] (by Keksuccino)
FerriteCore (Forge) (by malte0811)
Selene Lib (by MehVahdJukaar)
Frosted Friends (by Furti_Two)
Kotlin for Forge (by thedarkcolour)
More Villagers (by SameDifferent)
Fresh Animations (by FreshLX_official)
The Graveyard (FORGE) (by finallion_13)
Terra Incognita: The Unknown Land (by azmalent)
Odd Water Mobs (by Tegus_Talpan)
Simple Shops (by wolforce)
Fast Leaf Decay (by olafskiii)
Bountiful (Forge) (by ejektaflex)
Guard Villagers (by almightytallestred)
Just Enough Items (JEI) (by mezz)
The Twilight Forest (by Benimatic)
FastWorkbench Minus Replacement (by tfarecnim)
Cloth Config API (Forge) (by shedaniel)
Created Simple Storage Network (by makzzin)
The Outer End (by BlueDuckYT)
Mowzie's Mobs (by bobmowzie)
Entity Culling Fabric/Forge (by tr9zw)
No Recipe Advancements (by MutantGumdrop)
Caelus API (Forge) (by TheIllusiveC4)
Overloaded Armor Bar (by tfarecnim)
Extra Boats (by TeamAbnormals)
Config Menus for Forge (by Fuzs_)
Stay True (by haimcyfly)
Deeper in the Caves - Warden Mod (discontinued) (by LinFoxGamer)
Patchouli (by Vazkii)
Unofficial Wild Update Recreation (by Bones404)
Adorn (Forge) (by Juicebus)
Charm Reforged (by svenhjol)
RandomPatches (Forge) (by TheRandomLabs)
Iceberg (by Grend_G)
Aquaculture 2 (by Shadowclaimer)
Bad Mobs (by DarkhaxDev)
Golden Hopper (by MrCrayfish)
YUNG's Better Dungeons (Forge) (by YUNGNICKYOUNG)
Jaden's Nether Expansions | 1.1.0 - Souls n Spooks (Optifine Required) (by JadenXgamerWasTaken)
Trading Post [Forge] (by Fuzs_)
Blue Skies (by ModdingLegacy)
What Did You Vote For? 2021 mob vote: Glare, Allay and Copper Golem! (by alexandersfunandgames)
Drippy Loading Screen [Forge] (by Keksuccino)
Farmer's Delight Compats (by burritoeatinghamster)
Just Enough Professions (JEP) (by Mrbysco)
Personality (by TeamAbnormals)
Alex's Mobs (by alex_khaan)
Campful (by lumpazl)
Supplementaries (by MehVahdJukaar)
Abnormals Delight (by TeamAbnormals)
Better Compatibility Checker (by Gaz_)
Straw Golem Reborn - Forge (by CommodoreThrawn)
Pyromancer (by nikgub_)
Village Employment (by EnderPreston)
Decorative Blocks (by stohun)
YUNG's Better Strongholds (Forge) (by YUNGNICKYOUNG)
Better-Shields (by ToMe250)
Paxi (Forge) (by YUNGNICKYOUNG)
Akashic Tome (by Vazkii)
Mouse Tweaks (by YaLTeR)
Upgrade Aquatic (by TeamAbnormals)
Vein Mining (Forge) (by TheIllusiveC4)
Dynamic Surroundings (by OreCruncher)
Clumps (by Jaredlll08)
Curio of Undying (Forge) (by TheIllusiveC4)
GeckoLib (by ThanosGecko)
Inventory HUD+ (by dmitrylovin)
Tumbleweed (by bconv)
Enhanced Mushrooms (Forge) (by team_aurora_modding)
Villager Names (Forge) (by Serilum)
Xaero's Minimap (by xaero96)
Citadel (by alex_khaan)
Nature's Compass (by Chaosyr)
Pick Up Notifier [Forge] (by Fuzs_)
Exotic Birds (by ThePavoReality)
Motschen's Better Leaves (by Motschen)
Item Filters (Forge) (by LatvianModder)
Goblin Traders (by MrCrayfish)
JEITweaker (by Jaredlll08)
Jade 🔍 (by Snownee_)
Farmer's Delight Integration (by iku_tv)
Sapience (by the_infamous_1)
Creatures and Beasts (by rubyr1derr)
Dungeons Mobs (by the_infamous_1)
Traveler's Index (by idrae_)
BetterNether Reforged (by someoneelsewastaken)

try removing lazy datafixerupper, mods that modify the datafixer usually break how guards spawn

Just removed it. Seems like they still arent spawning. It was working fine on previous versions of the modpack. The only mod added was  Maiden's Merrymaking - A Christmas and Winter Holiday Mod on the newer versions if that helps

Do you have any data packs on?

End City for "Better End"
Pillager Settlements
Pillager Stronghold
Repurposed Structures - Savage & Ravage Datapack Compat
Repurposed Structures - Environmental Datapack Compat
Repurposed Delight
Environmentally Friendly
Buzzier Villages
Nether Castles [Standalone]

Try removing buzzier villages (or any other datapacks that modify villages) as they might override the nbt file that the mod uses to spawn guards in

still didn’t work unfortunately. any other possible mod conflicts ?

Try removing each mod one by one and see what causes the bug.

closing this due to inactivity, if this problem continues post here so it can be debugged more