...Just yesterday, I went 100% long on POPCAT with 20x leverage. Things looked good at first, but within 30 minutes, the price came back to my entry point and I ended up making nothing on the trade.
You made at least two mistakes. The first mistake is that you decided to trade with high leverage and your position could have been easily liquidated. And the second mistake is that when you saw that your position was in profit, you did not fix a part of it.