So if you want to earn more money, you can do both things, the more, the merrier,
What you do, not necessarily other people can do it, profit/lots of money, not only in trading and investing in crypto, lots of money can also be found outside/with real business.
Indeed investment and trading in crypto must have the skills and knowledge, but that cannot be just talking, must really understand it all because investing and trading in crypto has a high risk.
Study, graph, analyze, understand, thorough, patient, and get to know the game system of the market in trading and investing is the capital for success.