There are basically 2 reasons why traders fail:
1. not enough knowledge, for example, about technical analysis, how to trade, when to trade, and so on.
2. wrong mental attitude, and other things related to person's character and psychology.
The first thing you can learn more easily. There are so many online courses, videos, and other free material that you can learn all that if you have a strong desire.
The second thing has to do with your character and psychology.