The most reason traders are losing is because of greed. They will make profit but still keep the position opens but later the market might go another direction and they may lose. The second thing is that they can be using high leverage which will be resulting to liquidation. But a trader needs good strategies to make profit than loss while patience and low leverage are important. Also not to be trading shit coins is important.
When one goes into futures trading, a lot of greed works in him because he thinks that if the price of that token or coin moves further towards his entry, he can make a good amount of profit very quickly, preventing him from closing the position. Later it turns out that all the money has to be lost due to liquidation. Again, in the case of spot trading, many people invest in the wrong coin to get high profits quickly, and after holding it for a long time, if the price crashes later, it does not recover. The result is loss. If you can't control greed, you have to lose in all sectors.
Yeah, most of the time that kind of misconceptions leads traders to lose a lot of money, unknowingly that the market fluctuates to any directions makes you feel more aggressive, those who manage to earn some will push for more and think that they already knew how the market moves but a mistake can cause them losing more.
You need to keep learning and improving your understanding and not just putting your position a same like gambling to your fate, spot trading needs a lots of efforts to plan your position not just put it on and let it roll.