You're using 'Day trading' approach, what if you buy a coin today and it goes down the next day, will you sell it and buy another new set of coins for the day.
If a coin goes down during the day, I have many options. The first one that I try is "averaging down" my position. This is a common procedure for hedge funds that hold long-term investments, but it is usually a death sentence for day-trading.
Averaging down the position means that if you have 100 digibyte at 130 and then the price goes to 120, you can buy other 100 digibyte so your break even point will move from 130 to 125.
Since I usually open my trades with a very small risk, I can use this strategy as first attempt to recover a loss.
I can also try other strategies, but if nothing works and the price continues to go down, it is time to close the trade and go on. You can't win 100% of times, sometimes you need to let it go, it's part of the game.