More buyers. Bitcoin price goes up.
More sellers. Bitcoin price falls.
actually it's not just that the factor of the rise of bitcoin, many of the causes of bitcoin prices can indeed just go up and down anytime, the question here is the resurgence factor of bitcoin prices is not people, because if we see people keep quiet whatever happens with bitcoin, there some people who prefer prices go down because they can buy bitcoin at a low price, and all the people will be happier where the price of btcoin rises.