Ever since Bitcoin had broken from its last ATH (19,000$) it's price rally really lacks the volume that support it to go up, simple an asset going up while the volume isn't increasing isn't really a good sign that the price rally Bitcoin is doing is health thus every time we see a price correction it quickly falls down without any kind of resistance. Add this with other elements such as FUD and panic sellers then you have a recipe for Bitcoin's price fall. Another term for what happened is this was a market correction since Bitcoin's rally and majority of the cryptocurrencies in the market had a massive price increase on a short period of time while there is no volume to support it.