The problem with day trading, and stock trading in general, is that you can't predict the future. No one can. You can diversify your risk by buying the market

The problem with day trading, and stock trading in general, is that you can't predict the future. No one can. You can diversify your risk by buying the market (e.g. S&P 500 index fund) & hope the trend of going up N% per year continues, but even that isn't guaranteed. Essentially if you try to time/guess/predict the market, you're going gambling & the fees you pay on trading on the rake taken by the broker. Some gamblers do well. Most don't.