Everyone who conducts crypto trading must already have principles and know about profit or loss. My principle is that I will never sell when I see the results will lose, I better hold when the coins that I have bought are decreasing in price (holding is not afraid of losses) but part of the strategy. And I will sell when I increase, although I will definitely sell a little. Never be afraid to experience a loss, because loss is one of the risks in trading. But you must have a strategy.
No one willing to sell for loss but it will happens once you done the trade so what you will do if the price of your coin lost once you bough it?
You have two choice right,hold it until the price goes up or just buy more with cheap price and make recover from losses even if there is slight increase.