Yes, crypto market isn't stable and price of Bitcoin is very volatile these days. It went to higher levels of $70k yesterday and drop back to $66k level within a day. Some traders who buy at dip often make profits, however day traders do face some issues when market dumps suddenly.
Crypto market will never be stable, there will be always the price volatility. You're right, we saw the price of Bitcoin around $70k in the last few days, but it dropped to $62k recently. People who sold their Bitcoin at $70k few days ago, they can buy again now. But for people who didn't sell, can keep holding. Just get the lesson to every moment. Well, for daytrader, they won't be so confused because they must have stop-loss. If it looks like bad to hold, they will sell as quick as possible before they get bigger losses. They will plan again to buy and trade again tomorrow.