Iam doing crypto trading and all entry buy and sell i decide depend on technical analysis, because too many different coins in the market will be not possible to learn about each their fundamental. When price in resistance area that the best times to exit. They've said that the best time to sell is when your happy and not greedy. That news can contribute more to its price a hype that will make up the price high and to when to sell in the day before the news or an hours before any announcement that is the trick there but that coins without it you should be careful and not greedy always take profits.
Honestly, I do not really know about when is the best time to exit trading. It's very difficult to know when to exit a market. The only thing I know is that you have to let go of something. First be in a position where it's impossible to make loss, then wait for the profit but don't get greedy. Just think of this as experience that will make you better. At a profit level, every point is a potential exit point. Let go and move on, and find another job. A friend exited btc at $12k another friend $17k another $19k at the end they all took profit and got back in at $6k. There are a lot of online business out there that surely make you rich and happy, hahaha.