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 
Picking the bottom of dips is a fool's errand. Nobody can do it reliably. Anyone here who tells you that they can is a liar. It's the same case in all assets. You are better off waiting for a trend to reverse and catching the middle section of a rally than trying to find the bottom and top.