It's no new thing that traders enter the market just to take profit in a short period after they've made little gains but ignorance can make new investors make such mistake too, many investors have made such mistake before they realize that they were doing the wrong thing and desist from it, one thing about Bitcoin is that if you come into the market with a trader mentality whether you're ignorant or not it would always prove to you that's it's meant for a long-term purpose and make you regret on the long run cause when you take profits due to over excitement, panic or whatever the price would definitely increase beyond the point you sold and you'll regret why you didn't hodl it for longer, it's a mistake that lots of people have made in the past before the learnt from it and became long-term holders.
There are basically two types of investors in the market. One is the type you mentioned, investors who want to make more profits in a short time (who we can call gamblers)
Those who invest in various cryptocurrencies in the hope of high profits most of the time lose their capital [since cryptocurrencies are more volatile]
On the other hand, there are some investors who want to invest for a long time without looking at the near future. From here, those who are patient and can withstand the pressure of the market's downward trend are the ones who succeed. They do not express disappointment that they do not have much money saved and do not lag behind in investment. They enrich their portfolio by constantly purchasing Bitcoin through the DAC method as much as possible from their earnings.