A lot of people will always say they want to sell and buy back at a certain time but currently the trend has changed, most people that left a trade because of the dumping market turns out to regret because they were left out. There is a difference between selling at your own target and selling because the market is dumping, and that's the one most people regret, to make it understandable, a lot of people who clamour Bitcoin will dump are those who tethered and still in tether USDT today, because they find it hard entering most coins again.
Another thing is, you can hardly sell at the top, so better you have a target and when to exit the trade , because waiting for a particular time to dump, you might end up disappointed, look at Sol and most coins that pumped massively irrespective of the market, you will understand more.