If you want to improve your skills you need to be read and watch more videos about trading and getting more tips and strategy. Better to have you also own you have strategy. Most of the coins now are down and all you need is to wait the price until it will increase not only you are experincing that.
It is not just buying and selling but it has some rules and processes if you know about all these rules in different intervals then you will never fail in trading. Crypto trading is more responsive than that of traditional so here rules ignorance does not exist. You should be more cautious about everything happens in the market as we know that price of Bitcoin is volatile so there must be different strategies according to price.