Crypto trading is promising high profit even we can make profit up to 100% amonth, and no others kind of investment offer this return except crypto trading, that why many more people interesting in to it , and try to make money from it. But become succesfully trader is not easy, should be through long proccess and patient to learn more thing to make better trading strategy. To become expert trading we should be learn about technical and fundamental analysis, and also psychology of trading.
There's no such thing as promising especially since we're dealing with a controversial and unregulated technology here. Trading cryptos is a high risk venture and you should never jump in the water with both feet.
Controversial, unregulated, high risk does not mean you can still not trade it and make a lot from it, but the idea of it all is to be able to know how to minimize those risk by knowing every quality decision to make at every certain point in time which you obviously will not be able to make if you are not vast in the knowledge of trading. I have seen so many people who just opted into trading with no knowledge and simply just ended up messing it all up. It is something that requires being careful but does not mean you cannot do well as a trader with the right skill and strategy.