Note: In SPOT trading, you can never lose your coin, the worth of your coin can only reduce but your coin remains to rise again in worth when the market goes green.
It is true, but if you do not sell your coin and still hold when the price is down. You will have a chance to see your coin price increase someday so you will be back to see the high price for your coin and make a profit. But many traders decide to cut loss their coin when the price is down with the hope that they can buy back at a lower price. I think that will depend on their strategy to be applied in the trading and every trader will have their own strategy to the current situation in the market.