People who are good at understanding and assessing the crypto market situation, of course they will buy even if the market is in a bear or bull trend, they certainly will not be silent to collect their profits, even though in the short term they can certainly take advantage of the bear or bull trend situation to sharpen their rupiah coffers.
And when the bull run of the market happens again they will think about the benefits of both.
People who are good at trading or buying will know the difference between scam projects and projects that have a future. That is the biggest difference. If you believe that you found a project that will be around even after 10 years, which is rare, then you would be able to buy at any price and you could still profit.
Doesn't mean that you should buy and hold every coin, because there are only few coins that will be great even after 10 years, so you need to find ones that fit that bill. Being a great investor is less about when to buy and more about what to buy, if you know what to buy, when you buy it doesn't matter as much as what you bought.