From my experience, here are 4 reasons I discovered:
1/ Lack of Discipline— a) Not sticking to one strategy, b) not respecting your trading rules, c) not sticking to your plan.
2/ Lack of knowledge—Inadequate understanding of the market, trading strategy, financial instruments, and fundamentals can lead to poor decision-making.
3/ Not having a mechanical trading system—This leads to emotional trading. Decisions driven by emotions like fear and greed rather than rational analysis result in significant losses.
4/ Overtrading—Taking many trades will affect your decision-making ability and lead to poor decisions.
If there are other reasons why traders lose money, share them with me.
It is normal to lose money in trading, no one can trade properly without losing money. OP I think your points are valid with all the points you make. The most common mistake people make on trading platforms is to be overly greedy and trade impulsively. A good proof of this is that I myself have lost money on trading platforms due to excessive greed. I started trading with WIF a few days ago. I got good profit in the first stage and didn't sell. I was hoping to get more. I currently have more than half of my total balance lost due to high expectations. So I have seen people lose the most money on trading platforms just because of greed and trading with passion.