Day trading is all about Managing your risk, cutting your losses soon and letting profit trades run. I have been trading US stocks for years and worked at Prop Floor, Everyone gets their own style I been successful at trading opening gaps and it's my trading style, some traders trade at breakout and some do trade by looking at Prints(Tape reading). Day trading is not about Luck its all about risk management.

I May not be good at trading Cryptos Coz it's not my trading style I trade stocks with really tight spreads with High Volume, and again I meet a lot of traders who make money on spread betting.