There aren’t any human agent or bots that regulate the price. Bitcoin price is subjected to the law of supply and demand. Economics 101: Less supply and high demand would result to an increment in bitcoin price and vice versa, it’s historically proven that certain negative events in the crypto space such as FTX scam, Mt. Gox collapse, can cause the price of bitcoin to go down for a period of time.
when people made withdrawal it affects the price going down and when people invest high capitals it increases the price automatically
These buy/sell orders cannot affect the price of bitcoin on a large scale.
This topic should be in Economics board.