I cant animate the bones

Hi, I’m trying to animate a humanoid but every time I try to set a keyframe, this lose the values for the bone I’m moving. Is this a problem in the importation or something with the rigs?

For humanoid type rigs, you neet to animate them in another 3D application. You could however animate it in Unity if the animation type was set to generic, but you would lose your retargeting ability. I would recommend downloading another 3D package like blender, and creating animations there.