A crypto's volatility depends on the market. It's volatility makes it more alive than just remaining at the same price for years. It will be announced as dead soon if it remains at same price for years.
News in crypto market makes positive/negative impact on its price. Good news makes it more popular among people and hence more people are buying it and hence increase in price, however on the other site if the news about a coin is bad like security flaws, theft, hacking etc.makes bad impact on its reputation and hence it's price will go down.