Bitcoin price drops are common in the crypto world. Bitcoin prices fluctuating more than 20% are common and this is what creates opportunities for us to buy at low prices. Then, make a profit by selling it when the price is high. So, it's best, for now, to swap bitcoins to stablecoins first and wait for the market to stabilize for buybacks.
Fluctuation by more than 20% in the price was common when the bitcoin price was low under $500 back then in 2015/2016. Nowadays it is rare to see a quick change by more than 10% in a day.