No, it is not. Though, if you feel that you need someone to go over your plays and suggest things for you, I would try to find a community. I don't think there are necessarily "clans" for this sort of thing, but getting guidance should be easily accessible. For the most part, your improvement all depends on you.
there's nothing special about clans tbh, however you are able to join a community with players like you so if that's what you're going for then go ahead.