You really don't need an expert to tell you what really happened, you have big investors like Elon Musk and his companies investing billions of dollars into bitcoin, and that created so much hype and excitement in the community that made so many people invest more and that drove then price up, and than he suddenly drops out because of environmental problems caused by mining, and china actually taking serious measures against bitcoin miners and the panic that all of that caused so many people to sell that drove the price down.
He did not just drop out because of environmental problems.
1. He did not sell (not all) of the Bitcoin that Tesla owned. Even if he wanted to am sure he does not have the final say.
2. He only said Tesla stopped accepting BTC. But when they did, who bought Teslas with BTC anyway?
That so happens that whales manipulate the market and one of them is Elon Musk. But for now, I tried to forget his name and to accept that the crypto market has already in a curse of manipulation. Many of these whales just keep themselves anonymously, we don't know that some of them are government officials or known personalities.
Even though we don't like the idea of being manipulated but we can also that these people make the market alive and help the market to grow. In fact, we can't also deny that small investors are benefiting the market when there is hype happens. We are also in profit just like them.