It is not just one person that I've done that but too many to mention and they just keep on growing in numbers.
Trading is not easy to understand. You can learn many courses, spend many time in trading but it does not give you a guarantee that you will be a winning trader. It's very difficult as most of traders are losers as the rule 80 - 20
The market moves in a mysterious way so don't expect that your predictions can occur if you don't want to get a lot of disappointment but better if you can just go with the flow and do actions whatever the market is throwing at you. Learning more courses and spending more time is still better than the opposite because that can still contribute to the trader.