It's simple. Nobody wants to use bitcoin, it got exposed as a ponzi scheme and now people are panicking to get rid of their new crypto beanie babies.
There is no use for bitcoin, it is flawed in pretty much every technical and economical aspect, it has no real value. THAT is why it's crashing, not because of some sophisticated reason.
''it got exposed as a ponzi scheme''? Can you elaborate on that please
There are a lot of money moving around because of or in form of BTC. In my opinion it is not crashing also, it was just overpriced and now, as it is priced correctly, - BTC should slowly move forward from now on, I guess, until price explosion