Bitcoin price is also not stable.
What can you expect with a coin that's decentralized and isn't controlled by the government?
Crypto isn't stable because there aren't enough people in it, it's that simple.
You just can't compare the amount of people trading BTC vs the amount trading EUR or USD.
And BTC, still being at the top, is still the most stable crypto (which, again, does not mean stable, at all). Those who are saying that ALTs are more stable, are probably very new.
Whether there are enough people or not crypto will never become stable. That's why it is decentralized and I did mentioned it already, you can't expect something to be stable if there's no one controlling it. We don't care about those trades that are happening with EUR or USD. They have their own market so bitcoin does have its own too. And for those people that keeps on talking like a child and thinks that they are very well professionals with cryptos and says that its the end of bitcoin, just forget about them.