a large majority of traders lose money, and it makes perfect sense, because the competition is insane. you're going up against professionals who work full time at trading firms, these guys dedicate their lives to playing the markets. if you think you can go up against a full time professional as some random amateur hobbyist and win, you're naive and will most likely get eaten alive by the market.
semi related, the idea of anisa dabbling in stock markets and day trading reminded me of this:
it's long, but very much worth watching to get an idea about how these things work out.