Astronut in Terrarium

I am still not familiar with the animation and legging on blender, so I started with a simple movement. The Astronaut is modeled for games, so rig is very simple and you can see the boxy part
I want to upload a link or video directly, but there is an error that I don't know the cause, so put the link on the description and find a way to add it later. X(
https://youtube.com/shorts/dID_EGfsLHM?feature=share