Are you talking about Bitcoin price volatility? If yes then You should change your title otherwise this isn't a place to discuss about all Cryptocurrencies because this board is only specific for Bitcoin Discussion. Rather than you should move it to a suitable board for this discussion.
Fear and greed
Psychological factors, namely public fear and greed can also affect the price of crypto. example : The price of bitcoin began to move up a long time after there was no significant movement. This will result in the public becoming greedy and buying more bitcoins in the hope that the price will rise even further. The more Bitcoin buyers, the more Bitcoin prices will go up, and this causes more people to want to buy Bitcoins. When the bitcoin price starts to hit its peak, many people want to make a profit by selling their bitcoins. The more people selling bitcoin, the lower the price of bitcoin will be. Prices that move down cause fear (Fear) in the public, so that more and more people are selling bitcoin again.
The main reason why Bitcoin or a Crypto price goes up or down because of Supply, Demand, Competition and Market Perception. When it has a limited supply and the demand is increasing that price will surely pump. Another way is