Many altcoins even more volatile that bitcoin, because they do not have the liquidity like bitcoin. It is necessary to hold altcoins somewhere, that is why appear wallets like https://twitter.com/ownrwallet/status/1503739848569589764 which allow to safety store cryptocurrency.
Now a lot of new projects appear but all new projects and coins need to have a developed ecosystem and comfortable tools that allow to use cryptocurrency more simple.
The most infortant is to create a projct that will be userful for people. Every day a lot of new projects appear but not all of them are useful and will be able to survive in the future.