Stop Loss is used to minimize losses, small or large time frame must use a stop loss, especially traders who trade many coins at once.
In my opinion, stop loss is very mandatory, especially when trading in the cryptocurrency market, because sometimes the market moves beyond your expectations, the price can fall by more than 30% in a few hours, such as the events of 12 March 2020, the price of bitcoin fell by more than 30%, if at the time it didn't set a stop loss, I believe the loss is very much.
Minimize losses with cut loss its good because many trader always use stop loss when entry some coin, but for holder keep hold and waiting until price back again, I don't have any ideas to cut loss because I am most patient waiting for price back to higher, just if have any urgent then I will cut loss position.