There is a lot of market manipulations nowadays. This is the mainly reason of the BTC price crushing down.
Big whales want to buy BTC at lower price, so they just manipulate the market to bring them under 6k$.
When these whales will be enough huge, we should expect a biiiig price increasement
One of the reasons why bitcoin is rapidly going down is due to panic selling. When there is a dump , a lot of crypto users tend to panic and wanted to sell thier coin as their way of coping with the situation. This situation then contributes to price decline in the market.