Why most of Traders have bad psychology of trading they keep lose more and more and can lost his account and they left quickly when operations is winning?
People have trouble handling loss, so when they first see the price going down they do nothing because they don't want to lose, and even though all the signs are saying sell, they hold because they think it will turn around. The loss gets bigger and they sell, only to see that the price did come around, and that they just sold at the bottom. This stays with them, and they will keep getting trapped on this cycle over and over again. They do the opposite when they are winning. They see that they are getting profit, and at the slightest signs of a shift in the price they sell, only to see that the bulls were not done yet, and the price is still going further.
The problem is that most people can't read charts and they just trade with feelings, and get fooled by the experienced traders that do read the charts, and act in synchrony because they are all reading the same thing and by doing that, they are able to move markets. Only those traders can have profits, but that is hard to do. That's why I don't trade, and I prefer to hold.