Using In Game Animations

Heyyy, I really want to make a short Machinima but to make it work I need to use the animations that are present in game at moments that I want to use them. For example a Sim reacting in shock or crying... I'm relatively new to modding the Sims 3 (did it a lot with 2 and 4 though) and due to that I'd really like to know if any of you know a mod that makes this possible??
Besides that, perhaps any good poses or animations related to the Sims 3 that captures drama.