I sold all my BTC thats what caused the crash.

Lol. We should sue you on this forum for doing that, so what happened to coloring the moon on your signature

Guys, if you are looking for one of the whales that did this to you, here is one of them.
Jokes apart, this is normal and I see it as whales trying to shake the market a little bit since it is their profit booking points and also year end closing for trading and make all the weak hands to disappear while they take some good profit back in few days. To cut the long story short, stop giving your money to whales if you are panicking and selling at loss.