Indeed, trading is unpredictable but you can put your risk limit. Chart reading can prevent you to make loss positions , can even give you profit.
yes as i know that trading is always difficult it is all about your mind that how you are going to use your mind and what strategy you adopt for this.because you don,t know the price of a certain coin. Especially those scam ones which are pump and dump. So, better research first before you buy a certain coin to trade and have a system that will make you earn profit even little by little but at least, you are earning and time will come that you will be one of the big earners in terms of trading.but it is always risky also.