A trailing stop order on the spot automatically locks in profit if the price starts to fall after rising.
In practice, it looks like this:
You set a step (for example, 2%).
As long as the price rises, the stop order "trails" upward.
If the price falls by 2% from the maximum, the order triggers and sells the asset.
The advantage is that you don't need to monitor the market — profit will be locked in automatically.