Never buy a pump if you are day trading, that's all I'll say. Stating the obvious but buy low, sell high - you'll be put off buying a coin that's taken a hit, but don't be... look into it more, that's what trading is all about, buying undervalued stock.
I did the same thing, almost exactly the same thing before too. I was a day trader and realized it took too muhc of my time just waiting on which coins to pump and did my own research about long term trading and ventured into that kind of trading after. It made me realize I could do a lot more than just waiting for some of my coins almost daily to pump.