Lack of knowledge. Most newbies act too recklessly. Given the lack of their own knowledge, they often rely on other people's advice and external information field, which is often false or erroneous.
In fact, most of the information field conveys the theory said by someone in a circle, noobs listen to it and lose everything in the end.
They are riding the hype on a bad way and that’s why they lose most of the time. That lack of knowledge is normal for a newbie and if they act recklessly, that’s the time they’ll lose because learning is a process and they should not take any shortcuts for trading.
There’a a lot of good resources available online, its easy to learn how the things works here, I don’t know why they can’t still afford to spend time with it.