how do i fix this? it’s been an issue for weeks.

I have, disabled more mob variants, deleted, it, and fresh animations.
I have tried making a new mod pack, i have tried to completely remove files and reload.
yet every single time i play modded, this occurs? as well as, any resource packs used on other mobs, make them go invisible? For example, Blue's Better Zombies and Skeletons, and Bees Reimagined. help would be lovely bcz im so tired of my animals not looking nice,, or even normal atp.