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.
Greed is the main thing that kills traders these days, because when people start to hype a particular coin, some traders will live the particular coin they are holding or trading just to go and get the benefits from the newly hyped coin, and when it fails, they will refer trading as gambling, and some of them even borrow money to trade, and it is advisable not to invest money you cannot afford to lose in cryptocurrency trading. So it's a good thing we've stopped being greedy.