As far as I know and have seen, there are literally no free groups that would tell you about legit pumps because traders will abuse that and obviously the pump won't be benefiting those who do it. Yes there might be some groups where they give out calls based on their analysis and it may work well but again, there is no certainty the pump will actually happen or not.

Chasing 2x pumps might be too optimistic and 2x may result in losing all your money to a scam such as that squid game token.

I think the best and only way to make money from crypto trading is by analyzing tokens based on your own ability and make sure the token you are investing has the scalability required. Another quick thing I would mention is, make sure the market cap is not already massive when you invest and there's room for growth still.