In my opinion. Bitcoin prices fell because the biggest owner of Bitcoin sold large amounts of assets so that the supply of bitcoin in the trading market increased while the demand for bitcoin did not increase. so the price of bitcoin will continue to fall. and the price of bitcoin is also influenced by the conditions of the world economy.
Don't compare with only one person there are many people who sold the coins in the market. Due to market fluctuation and a lot of fud, the price went very low in the market. Due to a sudden increase in the price is also one of the factors to decrease the price.