Contracts can make money; technology is fundamental, but more importantly, it's about mindset and position management. First, look at the trend, then find a good entry point. If you enter before reaching the target position, the likelihood is that you will either be stuck or hit a stop loss before moving in the direction you intended. Additionally, set an ideal stop loss position; consider it as the worst-case scenario when you return, which is that the money you originally planned to lose is gone. As long as it's within your acceptable range, it's fine. Don't risk everything in one go; don't leave yourself without a chance to recover. After that, just leave it to time.
Yesterday, I decided not to hold the short position at 5.1 of SUI before bed; it's safer to take the profit.
Personal sharing:
If SUI can reach around 4.8, I will short it with a stop loss at 5.05.
If ETH reaches around 3440, I will short it with a stop loss at 3465.
In personal trading, I generally focus on small-cap altcoins, with a bit more on mainstream ones.
