SP500 can drop under 4k and enter bear market territory

SP500 has started 2022 badly and things look like will get worth.
After an initial drop to 4.1k, the index tried to recover, but 4.5k proved to be a strong ceiling and SP500 rolled back down.
Now the index is trading in February's low and I expect a continuation to the downside.
A drop under 4k would be significant for SP500, both psychological and marking more than a 20% drop (bear market, at least by the book).
In such a case, panic selling is a very probable scenario, and the price can drop fast to 3.5 support.
I'm very bearish SP500 and I will remain as long as the price is under 4.5k