Custom Mobs don't have the correct animations. Forge 1.16.5

For the 1.16.5 version of the mod can you please make custom mobs hit with the user's hand (I'm right handed and the custom mobs hit with the left hand and if I change to left hand they hit with the right hand.) Please fix this! Also the custom mobs have sitting animations and when I'm morphed and sit, the sitting animation doesn't happen. Please fix this as well (Still 1.16.5).