If futures are short, prices will still rise. After shorting futures, if its price rises, it will lose money at this time.
After shorting a futures, its price rises. Don't worry, analyze the market outlook in time. If it is judged that its price will rise, you can stop the loss decisively at this time. If it is judged that the price is only temporarily rising and the whole trend is still in the downward channel, then additional margin can be considered at this time.