Obviously it's not for everybody, just like having a job or a business, you only do it based on your skills and passion, without that in you, you'll never be effective in the field you are trying to pursue. Trading is very risky, you are investing in yourself here, so you also have to ensure that you understands what you are doing and you believe that you have the skills to be successful.
Trading is more of your luck then how much knowledge you have and how proficient you are in using trading tools. One thing we need to admit is that majority of traders end up losing money that's why its called trading is not for everyone. One more thing about crypto trading is that its fundamentals are still very immature compared to stock and commodity trading. That's why I say its more about your luck.
I do not agree with this at all, if you are depending on your luck in order to make money then you are not really trading but gambling, it is true that many people do this but I do not consider them traders at all, if what you said was true then there would not be consistent winners in the market, but we know there are, and this is evidence that your skill is more important than your luck, can luck affect some of the outcomes you get? Of course, but your skill can eventually overcome the bad luck that could come to you with ease given enough time.