svamp

Yes both launchers can use proton-ge as a wrapper similar to what steam dose.

As for recommendation, pick what you like. Both programs fill the same function and are both FOSS. Heroic has a nicer interface, Lutris has an option to show logs while you are running a game that can help with debugging if the game doesn't work for some reason.

Not at all, I have been running Linux for years now without any issues. Lutris and Heroic Launcher covers all my pirated gaming needs.

Thanks, it didn't work for me neither now for some reason. I have made an edit to the link without the /en/.

The arr suite is what you are looking for.

Check out this wiki.

Edit: edited the link.