The ideal thing before everything is to study, watch videos, seek information, or ask ChatGPT, but what you are doing is tossing a coin in the air, a gamble, and soon you will be left with nothing.

Good afternoon, I am new to trading futures, and if you can help me clarify a doubt, I appreciate it. I open my position either short or long with leverage of 60, and when I close it in profit, I realize that the same amount is deducted from my capital. Instead of adding, it subtracts, and I don't understand why. Could it be some commission?
It has happened to me in several positions, and I don't want to keep betting on futures for fear of continuing to lose. From what I understand, according to my concept, I should have won.