I attached a crash report below. I came here because Chat GPT pointed me to think your mod was causing the issue. I disabled it and sure enough the issue was gone. Don't know if it's strictly an issue on your part or an incompatibility with another mod. Hope this helps.
crash-2024-12-09_22.06.58-client.txt

Update the mod, this has been fixed.

I installed the mod yesterday from Modrinth, reinstalled it now and it's still crashing my game

The fixed version was released 2 days ago. You have skinlayers3d: 3d-Skin-Layers 1.7.3 according to the log, you want 1.7.4: https://modrinth.com/mod/3dskinlayers/version/D4TLEY5I

Here's an updated one on version which i believe is on v1.7.4crash-2024-12-09_22.28.28-client.txt

java.lang.NoSuchFieldError: Class net.minecraft.class_1723 does not have member field 'net.minecraft.class_2960 field_21668'
at knot//net.minecraft.class_329.drawArmorHud(class_329.java:5743)
at knot//net.minecraft.class_329.handler$doc000$ukus-armor-hud$renderArmorHud(class_329.java:5596)

Thats ukus-armor-hud: uku's Armor HUD 0.6.0+mc1.21.2 crashing, because that mod is not made for 1.21.4.

interesting, thank you for your help and sorry for wasting your time.

No problem. Always make sure everything is updated and matches the mc version/modloader. Using a launcher like the Modrinth launcher/Curseforge Launcher helps with that.