The loss is expected in trading. Successful Traders always experience loss, but they always manage how to get things right by not panicking and staying calm in every situation.
In every journey in life, one must experienced a lost so that we will successful in the future. So trading is not a exemption. I myself have experienced a lot during the course of my journey, specially in the beginning. There are days that I want to quit and think that trading is not for me. However, I kept on going and learn a lot from my past mistakes. I say that I'm doing good right now and I'm very thankful that I decided to stay in trading.
Well if you buy coins at a high price then you sell it at a lower price, definitely you will lose. If you think the coins you buy gets low, you shouldn't sell it, you just hold it for a while and wait for the price to get higher so you can get profit. Don't hurriedly sell your coins and be patient to win in the trading.
Of course that is not the correct way and you can't really profit that way, unless the coins started to rise again. And you will only get a small profit, as compare to getting it when the price is extremely low. Patience is really the key here. We need lots of them. We should learn how to manage it so that we can profit in the future.