What does believing in something have to do with what will happen in real life? Everyone who starts dealing with crypto trading thinks that they can make a lot of money, they don't do it because they are bored in life or have excess money that they want to lose. Those who will eventually say that they have profited are in very small numbers, and their success does not depend only on what they truly believed would succeed, but also because they invested a lot of time, money, and were persistent in what they were doing - with of course a certain talent that is always a part of success.
It is not a negativity but a reality supported by statistics that show how difficult it is to be successful in this type of trading. However, at the end of the day, everyone is free to invest their money however they want, and cryptocurrency trading is just one of the ways to lose money quickly (if you don't know what you're doing).