Remember, this whole thing about crypto is largely decentralized, thus, there is no single authoritative body in control of the crypto market. Although there are few centralized platforms among crypto, the market is largely influenced by the efforts and influence of the users of crypto. How well sellers and buyers treat the coins on the market affect the performance of the market.
Its hard to predict who control the market price but the price always dictated by supply and demand. But recently, many peoples getting panic with negatives and fake news and its make price drop significant