signal should we need until whenever. because the signal can anticipate us if the market starts to fluctuate up or down. so in trading you must be good at doing analysis to determine the right time for us to move to a good position
Signals will also not help you in terms of trading because the one who makes the signal also doesn't know when a coin will go up or down so there is still potential to lose if you just do it with an uncertain guess, Hello mate, Trading is not a gamble that you have to rely on a signal.
though there are some signals that indeed knows what will happen to that coin according to their analysis , yet only few from thousand has so yes don't rely in signal provider instead make your own research and analyzation .
Trading is also a type of gamble mate , because we are buying coins that we don't really know 100% will increase so what is the difference from gambling?