So all the bones work except the hand. Attached are a few pics of what I mean: https://imgur.com/a/IZO3hFF
Only part of the hand rotates, and I've tried weight painting the entire hand, but it still does the same deform. I've tried adding in an IK for the hand which also doesn't seem to help. If it helps, the fingers (Which work just fine) are all parented to the hand bone.
I've tried searching, but it seems that people are stuck on the mesh deforming once the armature is applied, as opposed to when rotating or manipulating the armature.
Where did I go wrong?