Playing alpha to collapse the basement like this, what else to play when the profit margin is not much to think about?

I can't believe it, guys. I've lost more than 100u already, and when I came back, I realized. What I mean is, after I bought it, I set a reverse order, but it couldn't sell because it dropped a little bit, just a little bit. Then I immediately sold to go to vol, and as soon as I sold, it reported success, and the money came back to my account. But I had something to do, so I turned it off, and after 2 hours when I came back, it showed an error and returned the quantity I bought. During those 2 hours when I was busy, it returned, and that one made a profit of 2 hits, and I got stuck, so I sold at a loss. If it had reported an error at that moment, I could have sold it again and wouldn't have been in this situation. I turned off the machine, and after 2 hours when I returned, I just saw the error that it couldn't sell.