As such depending on the reason of their failure the actions needed to correct those outcomes will be different, however taking into account what I see in the forum with those which are newbies, I really think the majority of them do in fact lose their money due to a lack of understanding about the markets, as they believe they can make a lot of money without the need to invest their time and effort to understand what trading is really about.
I agree to this because greed is a major problem not only for newbie trader but for the trader who thinks he is experienced. If a trader of any standard get greedy, he will be tempted to chase profit and leave out the important trading strategy which will guide them. This is a serious thing for traders, greed makes a trader to increase leverage and sometimes trade in martingale style.
We need to understand that greediness is one of the major factors that makes traders and investors of cryptocurrency to venture into lost, but since advertisement or people campaigning of greediness in cryptocurrency investment many people have subdue or redress from being greedy in cryptocurrency trading or any other of digital trading, so people i will assume that don't know how to overcome come greediness now in trading is the the newbies who are curious to gain everything.