NO OPTIFINE NEEDED:
Go to Shaders in Video Settings > Shader Packages > Add Your Shader (by default contains Complementary)
RESOURCES:
✔️ World Generation Terralith
✔️ 2 New Dimensions of Blue Skies
✔️ Nether treasured with Nether amplified!
✔️ Updated Netherite [New Netherite Equipment]
✔️ Aquaculture 2 [New fish and tools]
✔️ New creatures, mobs and bosses from Alex Mobs!
✔️ Tons of NEW Dungeons and Structures from When Repurposed Dungeons and Structures Come Out
✔️ New Moon Cultures, Foods and Events!
✔️ Enough Items and Waystones
✔️ Xaero World Map and Xaero Minimap
✔️ Tons of MrCrayfish Furniture QOL and Mod resources
✔️ A new Vanilla Minecraft experience
✔️ 180+ Mods
Be happy with this Modpack full of things to do!!!