It seems logical to seek out someone experienced who can tell you what to buy and what to sell.
Maybe you follow their signals and make money, 2 or 3 times, or maybe 10 times, maybe 20 times.
But how would you feel if you found out they were identifying these signals by looking at tea leaves? Or maybe they just made them up?
If you can't understand how the signals are derived, do not follow them. And if you can understand how they are made, you do not need a signal provider.