How do I make uasset file animations with mixamo?

Hi, I bought this package from the EU4 shop, only I am having difficulty making animations. Mixamo does not accept these files, and I can’t even insert animations on eu4. Does anyone know how this is done? Can you help me ?

You can’t directly use uasset files those are for the engine only.

In unreal editor content browser find your character. Right Click -> Asset Actions -> Export. That will give you an FBX file for the character that you can use with mixamo.