Never trade against the trend. Once the upward trend is established, all you can do is buy or wait and see. Never sell short just because you feel the price is too high - again, don't go against the trend. There is no rule that says you must run with the crowd, but at least you should not go against the crowd.
If you like contracts, like to study the market, and study technology, click on the avatar. I have many years of experience and skills in the currency circle, and I will share them for free. I am waiting for you in the circle, online at any time, welcome to discuss and make progress together