Day trading has a lot of risks if compared against mid-range or long term trading. We can't predict the price for short term as even after we buy the coin, it might start dumping and in such situation we might always need to hold the coin until we see it rising again. Day trading is meant for extremely volatile coins with high trading volume. Research is always needed if we tend to have profits. Investing randomly in any of the coin for day trading will only give loss.