We don't know bitcoin will go where continue to decline or go back up. Perhaps the decline that occurred this time was the last decline, and after that, there will be a resurgence of bitcoin that the price will continue to increase to a significant level.
It is difficult to say something right now and it was difficult in the past days due to the volatility of Bitcoin people are finding it difficult and they choose little profit and sell in this low market which is not happening and contributing to go higher towards bull market. Just focus on your investment plan and hold your coins tightly if you have and if you do not have anything then the current price is more than anything for an investor to find such a favorable market like this.