No way I sell it in a loss. I prefer to buy back more Bitcoin. And with using same amount of money, I can get more satoshi

This situation is good to buy back and not sell it in a loss. You will see your money value will increase following the Bitcoin price increase. So you should use this moment for your own benefits.

No need to be afraid to buy back because there still a big chance Bitcoin price will increase higher. So that will your own personal decision to buy back or even sell in a loss. But if you decide to sell, you should not regret when you see Bitcoin price increase later.