Java Entity Animation

Hello, i recently passe on Mcreator 2025.2, before i used the 2020.2 for the 1.12.2, now i'm want to update to the 1.21.1, and i got question about the custom animation for the entity, i would know how to integrate animation like an idle, walk, running, sniffing, roaring, vocalizing

And for that, i would know if it's possible and if yes what kind of condition i could make for all this kind of animation ?