Low Poly character not working with animations(skeleton) from mixamo

Hey, I’m pretty new to game development and unreal, so this might be a dumb question but-
I have created a low poly character in blender and imported it to unreal engine, but when I select the generate skeleton option on unreal, it gets just one bone by the name “hair” and it doesn’t work with animations that I got from mixamo.

I will attach a screenshot of the character’s generated skeleton.