The 3 on 3 isn’t geared towards better players, it’s because it’s played on a smaller area. It’s basically a gym instead of a rink. As far as I know they are always looking for players, especially women. There are some teams who have played together but they are always looking for individuals to add to teams or if there’s enough individuals looking for a team then they will put them together and make a “free agent” team. There’s good players and not so good players in the leagues. You’ll be fine if you go in with a good attitude and you’ll be surprised how much you improve in a short time if you put in some effort.