The market has indeed rebounded, I checked the Altcoin charts today.

Many people are clearly bearish right now—but in my opinion, weekend sell-offs often lead cryptocurrencies to bottom out earlier than the stock market.
This round of adjustment is excessive, but that's how financial markets work.
Prices fluctuate around value, but they generally do not closely follow value; instead, they either rise excessively or fall excessively.
Altcoin markets are still on the way, and Bitcoin can see new highs, 130,000, 140,000.