You see you short price 143.01, close position 142.81. The difference is 0.2. The profit rate is 0.2/142.81=0.14%. Binance's transaction fee is 0.002 for market orders and 0.0015 for limit orders. If you always buy and sell directly instead of placing orders, then it is 0.0015. The profit rate must be greater than 0.1% to avoid losses. This is unrelated to the size of leverage; it is a ratio. So the actual profit rate of this order is only about 0.04%. In total, it's just a few dozen dollars.