I think, manipulation is existing now in the Bitcoin. There are many big players or big business person behind this dump of Bitcoin. They are starting to accumulate, they are controlling the market that's why big dump happened, and also because of ETF issue, the Bitcoin price falls down to below $6,000.
Manipulation do exists in bitcoin market but these whales are intelligent enough. They are not letting bitcoin fall under $6,000 and thus keeping the interest of miners and people alive. Although they tend to increase decrease the price and people are caught in bull trap, but overall the currency is staying above 6000$ which a sign that it can boost and pump any time to 10K or more. Also few good events like ETF still to come this year than will give a boost to this digital currency.