the frame of the bits looks displaced ingame, I only have optifine and chisel bits. Anyone who knows how to solve this?

yes, i have optifine because without it my game runs horrible

I have a similar issue too.
I cannot see the frame and the solution may be the same.
I'm still trying to solve this but i don't know what to do anymore (i'm playing Pokehaan craft 1.16.5 modpack)

This is because of optifine. It breaks a lot of the custom rendering mods do, and this is a Consequence. There is sadly.nothing I can do.

Do you have optifine or sodium installed.?