Binance futures has a different pair than spot trading.
For an example, this is the ETHUSDT for futures: https://br.tradingview.com/symbols/ETHUSDTPERP/ and this is regular ETHUSDT: https://br.tradingview.com/symbols/ETHUSDT/?exchange=BINANCE
You can open them side by side to see what I mean.
While the difference is almost negligible, when backtesting I noticed some discrepancy between what I was supposed to get and what I really got, Also, the position sometimes showed that I had loss when I had a gain.