How to set it reasonably? There is no absolute method.
Changes in market conditions are often unexpected. If the stop loss set according to the current idea is not broken, it does not mean that the same setting method will not be broken in the future.
It is subjective to be wronged or not. The purpose of stop loss setting is to determine the loss you are most willing to accept in the current transaction, even if you stop loss, you are willing to accept it.
Everyone has different money and different feelings about the loss, and the methods are even more strange. Which method will be a stop-loss method that everyone is willing to accept and feel wronged?
In addition to the set ideas, it is also necessary to add personal subjective feelings. For example, the conventional stop loss is set outside the pressure level/support level, but there are several units outside, and everyone has different ideas.
Therefore, the setting of stop loss needs to be pondered, set and adapted by yourself.