You are wrong there are many buy orders for bitcoin but it is just a minimal compared to those who sell their bitcoins. Probably those who sell bitcoin are huge holders for bitcoin and definitely had move the market price as seen in the coinmarketcap.com website. For now just continue to believe and risk everything if you wish to earn more in the near future.
Judging by the capitalization of Bitcoin, which has decreased over these few days after the fall, Bitcoin is simply being transferred to Fiat. Those who want to buy bitcoin are less than those who want to give. And this means that the price of bitcoin will still fall.