I will like you to see it in 3 ways.
1. See it as a correction that was bound to happen anyway, after the huge non stop buying for months now.
2. See it as whales cashing out and some noobs getting scared and selling at losses. (they will get to learn from experience later on)
3. See it as a Christmas gift, if you want to get in at a lesser price because later on, this year or next year, we are coming back at some point to test back the previous top. Some call it black Friday for crypto shopping.
Jokes apart though, there is really nothing to worry about. You are welcome to the volatile world of crypto. It is a bloodbath out there right now and they happen once in a while. It will pass and forget anything else you are hearing.
Love your answer. I would also add, that possibly, a lot of people, who held BTC for a long time, started to sell out, since they saw the price kinda stopped growing, and hey, 18-16k are very good levels to cash outk if you got it for like 200 buks. and the rest is panic sell.