Hello, Im preety new on forum, I posted 99% on my local forum, but now I want also post on international forum.

Im intrested in trading in crypto, cause mining crypto in this days is not profitable. I Want to know how I can recognize right coin, expect BTC, and ETH, how I can recognize some other good coins? How I can recognize when is the right time for buyng and sellig crypto to make most of trades profitable? Is it possible some how exploting some coin and be sure this coin can make 10x, 20, 50x,... in next months?

Sorry if Im spell something wrong cause my English is not best.