...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.
20x leverage is very dangerous and liquidation comes when price changes about 5% opposite to your trading position. It is not a leverage to use especially with shit meme tokens which can have rug pulls and crashes anytime.
When trading, use a stop loss order to prevent your loss or at least reduce loss severity. When your open position is in profit, set up an order to stop loss for kind of profit if the market suddenly turns oppositely. It is like positive stop loss and you can set it up proactively for having kind of profit to enjoy and also protect your initial trading capital.