One of the reasons why traders loose money everyday in their trading is 'greed'. A trader will hear about a particular coins he wouldn't even do research or proper findings to know the future of the coins which he wants to trade his money on but rather the greed in the trader will push him to use all he has with the aim of making 4 or 5 times of his trading capital.
Traders are big risk takers so everyone should know what he or she is trading on so that when you loose which is normal, you will learn more.
No trader is perfect but mastering coins you trade on can help you, remember trading is like a gamble you either gain or loose.
Do not trade with everything you have,your egg can not be save in one basket, I have lost but I have gained more in trading with the help of research and mentorship programs.
Well the problem about greed of most of the trader is already known, and most of the trader know also about it, but they cant stop their self from being greedy because that was their natural response from the high volatility market and in the different market situation. Maybe soon trader many more traders can control their emotion and stop being greedy when they can get a lot of experience from the past trades that they experienced and they will learn to extend patience not only in trading but also on investing.