Just because you are not making a profit, doesn't mean that trading doesn't work, some people do make a profit. And just like in anything with life, sometimes some things are good for you and you do it very well, and somethings you are not, it's normal.
I can't play the piano, doesn't mean playing the piano is useless or it doesn't work, some people are great at it and play very well, I can't shoot like steph curry, doesn't make basketball any less of a path for some people. It just means, trading isn't for you, which is fine, you can find something else.
Some people say the same thing as you, just because we cannot make a profit from trading does not mean that nobody else can.
Ironically, people who make that claim have never made money from trading themselves, nor have they ever met anyone who has. What about you? Have you ever made a consistent profit from trading, or do you know anyone who has?
Comparing trading to the piano or basketball is a flawed comparison because they are fundamentally different.