I agree, that this is a natural thing to happen in a market, an asset will not always go up and not always go down, including this time what happened to bitcoin. I say worry is also a natural thing that we feel, as long as we can still control it, in other words, don't let that worry overwhelm us. If that happens, of course, we will lose our way and we may lose what is our asset.
And today, as soon as bitcoin started to fall in value, the whole altcoin market followed. And the classic way, as soon as the altcoin market started to fall, everyone started to move to bitcoin and its dominance started to rise again. Investors now want to minimize risk and pour their assets into lower risk assets. Such moves by large holders create panic in the market and provoke sell-offs.
It is very difficult to suppress such a feeling as herd instinct, even when all people are at a great distance from each other and do not see each other in the flesh. The market is always dominated by the herd mentality of the crowd and the dependence on the big players.