I Never thought that I Have to see bitcoin is under 7K USD again in This year. Because we already did this about a couple of months ago! And now Repeat Bitcoin is under 7K USD! And the market trend says that Bitcoin can go under 6K USD too. But what is the actual reason behind this vast fall? I haven't seen any robust lousy news or anything like that, Then why bitcoin is continuously decreasing? My friends are laughing at me, who sold their bitcoin when it was 14K USD! That time I told them you guys are doing wrong, Hold your bitcoin, Bitcoin Price will rise again. And now I am regretting really 
I think the biggest reason for the collapse of bitcoins is because of the whales that keep control of the price. They manipulate the price and make false news to scare small investors and oblige to sell their respective bitcoins. And when the whales' intention is fulfilled then they will buy again to pump the price.