No BTC will not reach to this level as this will be the extreme crash level and still there are so many BTC investors.If BTC reach to this price level then whole market will crash,which i think will not happen at all.
Why it should crash? The journey from $20k to $5k was not apocalypse so $5k to $4k can happen. Can, not may

Because in my opinion there are too many people who wants to buy bitcoin on such sale, and we are already on such support. And it will rise soon. Just give it a time.