3 Wheels ??HELP

So I Was mudding in A pretty deep hole I got stuck so I put it into 4×4 I notice all wheels spinning besides Tha rear left won’t pull for nothing So finally got it out the hole an notice the Cv Boot had a hole in it an some metal balls came out??(dont know much Need help from tha pros) also in 2WD the Right will Just dig But the left will just like rev or something Thanks