Don't add positions before you make a profit, right?

It is right not to add positions when you don't make a profit. If you don't make a profit, the position may be a loss. At this time, adding positions means adding positions with floating losses. If the market continues to develop, the order will be trapped and the loss will be very serious.

Many traders have floating losses and add positions to average the price, and close positions when the market falls back to avoid stop losses. Most of the time, they can resist by adding positions with floating losses, but if they encounter a large single side, they may add more positions as the price falls, and the more they add, the heavier the loss, resulting in serious losses or even liquidation.