It all depends on how much the trader is good. I think that just on trading you can not earn millions, but on a crypto topic it's possible. I think that really good traders who perfectly master all the methods of studying the market can also earn millions, but I think that there are not many such traders. Because in order to make millions, you need the appropriate investment, knowledge and skills.
I strongly agreed with you Sir, it depends on how much the trader is good. in crypto world we find a lot of trader .But everyone not a good idea about trade .If you want to earn more money by trading then you have a good idea about trade. Without good idea it is impossible to earn huge amount of money .So, you must need appropriate investment , knowledge and skills.