I ended up able to install lutris using flatpak
flatpak install flathub net.lutris.Lutris
and also using sudo apt-get update and sudo apt-get upgrade solved the software app being empty, I think maybe it was out of date.
Looks like the discord link is fixed now too.
I can't seem to figure out how to get lutris installed.
I open system>software tab and it opens to a blank UI with no apps in it.
Tried to find the discord for this but the unmanic link in the first page doesn't work and it's not listed anywhere.