In high school in the mid-90's I had a teacher who traded stocks all day on his computer even in class. I asked him about it once and he explained what he was doing.
Without a doubt, the guy was losing money.
You don't need a ton of knowledge to day trade. Fundamental and technical analysis dont help too much.
I could show a technique that is fairly reliable at seeing where traders are positioned and prices that will be defended. I regularly (twice a week) go over the action live to a bunch of traders and i'll call out those areas of interest and time-permitting will walk through what is occuring when we get there.
I do this for free. This is not the style of trading most retail traders follow. Its prop shop techniques.
People are often in awe of how accurate the calls are.
But you know what? Even knowing how this all works, which prices are significant & why - that still wont turn most people into profitable traders.
Its just one layer of the onion...