first off, you need atleast the wos animations. you can get the enchanted third person as well, but its not exactly fully required, if you get it then alright, but if you dont wanna use it, youll have to do "sv_cheats 1" in the console then "thirdperson", then you can use it.

subscribe wOS Base and make sure it is enable,you should get the thirdperson animations,if you dont, that's may because gmod addon-load bug, it show the addon has already installed, but actually it didn't,and im not sure how to deal with it