Share some experience
If you're playing at the 10-minute level, it's best to open long positions during downturns and short positions during uptrends. Ideally, you should place your orders after a complete one-minute candlestick or right at the beginning. This is called left-side trading. As for the reasoning behind it, unless you encounter a trend reversal, going long during uptrends and short during downtrends can easily lead to losses due to spreads.
Also, don't get overly excited. If you have a large capital, stick to 250, and play with that amount. If your capital is smaller, set a limit for yourself, like withdrawing once you earn a certain amount of U. Generally, winning 3-4 times in a row is relatively easy. I usually start with 50 U, and once I reach 300-500 U, I withdraw and start over. If you earn U, you can invest in spot trading, wealth management, or withdraw it. Don't put all your funds into event contracts; encountering a single extreme market trend could wipe everything out.