First of all, if you want to find a good stop loss point, you need to see what technology you use to make this trading order, so that you can set it up. For example, if you draw a downtrend channel according to the market, then your stop loss should be set on the upper track of the downtrend channel. Because you think the market is falling, then you will naturally buy down, so once the market is distorted out of this downward channel, it means that the market may reverse, so you have to stop. Of course, there are many technical forms, such as head and shoulder top, double top and so on, which should be set according to different technical forms.
Secondly, you can also jump out of your own graph and set the stop-loss point according to your psychological pressure. If you can bear the loss of 10%, then you can control the stop loss space at 10%, and if you can bear the loss of 20%, set the stop loss at 20%, which is also a stop loss method.