The market is being controlled mainly by,the law of demand and supply and also news relative to cryptocurrency,which migth be for or against the price of bitcoin,the whales in the space also has some level of influence on the market trend.
The only thing which can change the market is exchanging. Buying and selling the bitcoin can effect the market depends how much you're selling and buying.
Buying and selling for sure because when more people buys so the price of bitcoin get high and when more people sell so the price falls, so market is actually controlled but the investors and the sellers, growth is dependent on those who are buying a lot of bitcoins, we should try to use our money to get more money, at the same time market of bitcoin is obtain more value.