Apps in the app center don't work

I have now Endless os for a day and i like the system but there are things that aren’t that good and one of the things is the app center.
I tried Gnome Twitch and the app just don’t work. It starts and crashes after it. Loging in works but that is it.
The app isn’t updated for over 3 years now and i don’t understand why apps like that are in the app center.
Also do i miss a lot of apps like wine.
Where can i find the version that works for this os?
Is there a place where i can find working apps that i can install trought the terminal?

The app center is just to limited and filled with only a few basic apps that work and the rest is even for Linux just terrible.

If not, than i will look to an other Linux system that isn’t Ubuntu.