Waking up, I found that the limit orders I placed didn't sell, and because they didn't sell, there is an opportunity to earn a little more.

Using limit orders is for reference only; if there are exit points that haven't been executed, you bear the responsibility.

Yesterday, I already saw someone post that limit prices are no longer useful; today, I tried it, and it really is the case.

Double points with limit prices?

It's not that easy to earn points.