There are really coins which are really good or does fit out with short term durations which simply means that you would really need to make out decisions basing on what you are seeing on market trend.
Managing losses is depending on someones skills because it is part of risk management which people should really learn up because if you dont know on how to handle well in terms of your finances
or capital then you would surely be having a problem towards on profiting. Try to make yourself sustainable and minimize losses as small as possible.
Indeed, I've categorized them nowadays and you can't have make it up once you don't encounter losses. Many times I tried to make myself sustainable but I failed because of my emotions, so I keep my profit optimum and I wasn't able to gain as much as the other traders who earned huge returns with their invested cryptocurrency.