I personally do not know of any, and I wouldn't even go in search of one, as a returnee be careful with people who say they are experts and most times own trading groups on telegram and even convince people to give them coins to trade for them(once your coins is in someone else's hands, it's no longer yours). So do not believe any of such people nor put all your hopes in their trading signals or strategies, you are better of starting from scratch and learning tips and trading strategies all by yourself.