I missed to buy bitcoin when it dipped to $9K. Then I missed it again at $10k thinking it might go down to $9k again. And now, I am waiting for $10k but it seems that it will not go below $11k again. I must be the biggest idiot in crypto world 
you can buy now mate cause apparently the price fluctuate again back to 10k or wait more days cause there's a chance it will continue to decrease gradually. Dont lose hope cause nowadays the market is not yet stable so buy now while the price didn't surge to gain more profits in the future and also to prevent regrets.