The use of stop loss for a trader is mandatory, especially when you are engaged in margin trading. But to learn more about this feature, you should check out the Binance blog: https://www.binance.com/en/support/faq/360040016512 Especially clearly it will be seen
Youtube Finance Academy: https://www.youtube.com/watch?v=oe1IAVqJonI&ab_channel=BinanceAcademy