I have also joined some trading signals group 2-3 months ago but to be honest, I m not satisfied with the results (my case) , so i moved from this and I started learning, this i also not such satisfied but this time i m learning from my mistakes and the most Important thing is that I'm responsible for my profit as well as loss and this gives me pleasure as compared to following signal groups.(Maybe some are good)
But I will suggest you that if you want to stay longer in trading you should focus on learning rather than signals, most of the groups asks for fee, besides of paying that fee to the groups you can invest that amount in your learning that will definitely favour you....
There are really no signal groups that could be good forever, there are some that get lucky here and there, but there is not even one group that can help you make money all the time forever. Same goes with everything in crypto world, whatever move you make, some of them will profit you and some of them will make you lose money. At this point what you should focus on is finding the one that would allow you to make money more than it losses you money.
If you can find a method, it could be signals, charts, traders, copy trading or whatever else, that makes you money more often than loses you money, that would mean that there will be times you go up, and few times you go down but in a whole year your money will go up. That is the type of things you have to chase, and signals are usually not that, because those only tell you what it "should" do but bitcoin rarely does what it should do.
