It would be more reasonable to start your own team. If the response is, "we would need a banker," you are asking a fundamentally different question, involving finance. If you are simply looking for socialization and the possibility of collaborative earnings, it is easier to form your own group.
That is not an off-handed comment. Exisiting teams are usually highly clannish, and discourage allowing outsiders to participate. The basic logic is that is we need more bodies, it is easier to train them outselves than to hire outsiders that we would have to re-train.
Again, that is not an off-handed remark. The average blackjack player has an inflated idea of his or her own skills; the bottom line is that when the individual discovers that he or she cannot earn a decent profit solo, the first inclination is to join a team.
From past experience, I can tell you the first question is going to be, "What can you bring to the table?" If it isn't a sizable bankroll, and proven experience using the same strategy the team uses already, under fire, in casinos, without detection, and successfully, you don't have anything to offer. I don't mean to be rude, or to discourage you; I just want to give you a little reality check.
Playing blackjack is not rocket science. Starting cold, a reasonably intelligent, motivated person can learn to play professional-level blackjack competently in a couple of weeks. That is not basic strategy--that is a multi-level count with all the window dressings of strategy and application.
At the end of that period, the same person is just as capable of going solo, and with a modest amount of luck, never looking back. The idea that you need a bottomless bankroll to win a pittance at blackjack is totally at odds with reality; the players who tend to win tend to win, and the players who tend to lose tend to lose. Whether they are playing solo or with a team.
Bottom line; playing on a team will not improve your chances of winning, any more than it will absolve you of responsibility for losing. Your best chance to get on a successful blackjack team is to prove clearly that you don't need them to make a decent living playing blackjack on your own.
Good Luck