How to run a 2nd & separate instance of a Flatpak?

Help
1

Sober is the only working Linux client working for Roblox right now. It’s only available as a flatpak, there’s no nix package for it. I would like to play games like Tower Defense Simulator with two accounts side by side.

If possible, I’d like to have two instances of the flatpak with separate program data so I could launch each instance without having to sign in.

2

This could have problems I don’t really know about so use at your own risk but you could try flatpak run --env=XDG_DATA_HOME="/tmp/random-name" <APP_ID>

You can find the Application ID using flatpak list --app