Just google baldi gifs, then save the ones you want/ need, go to construct and load frames.
Unless you mean how to make him move around on the screen, in which case you have to decide if you want a 9 direction or top down style or a platformer; both of these can be found in the behavior sections. The interactions with solid objects are important for both of these objects. You will likely also want the scrollto behavior
i want to make him move like he does in the game