So i installed the mod (only this) in Minecraft 1.16.5 and when i opened the game lots of textures of vanilla Minecraft were glitchy and the models looked ugly idk what caused this

Also, do you have optifine installed?
Yeah I tried with optifine and vanilla and I'm using the Android version of Minecraft

I fixed it! It was there because of mipmap settings I played around with them till i got the result i wanted but thank you so much for looking into this

When you remove the mod does it fix the issue?

When you remove the mod does it fix the issue?

Yeah it does

Can you upload screenshots of these texture & model glitches?

Also, do you have optifine installed?