Need help with rigging. How can I prevent a rig from behaving like this

[MaxPlayzOfficialYt (Maxii)]

I recently just rigged a cat for my game. But whenever i play the game. The rig automatically gets up and stands in the wrong way!

Any help is appreciated :3

[MaxPlayzOfficialYt (Maxii)]

some more photos. (Feel free to ask for more information if needed)

rigging:

workspace:

[MaxPlayzOfficialYt (Maxii)]

Update: I fixed the problem. I had to resize and rotate the root part