Newb animation skelly question

I have a 3d model with meshes. I want to now animate it but I don’t know how to add the bones in Unity to do this. Can this be done in Unity or does the Skeleton need to be created in Maya.
(bear in mind that I have zero Maya skill and was hoping to be able to do this in Unity)
Thanks

you won’t be able to do this in Unity. While it’s theoritically possible, you would have to create bones and assign the vertex weights using script. Generally you don’t do these sort of things. Your best shot is learning to use any 3D software or find someone that will do it for / with you.

Are there any models on some of these 3d model sites that have bones already included in their package, or is that also something that just isn’t done?

Yes, that’s called rigged models. For most 3D character you’ll find on these sites there is a rigged version.

Awesome, ty very much for that help.