https://bazzite.gg/ If anyones interested scroll to the bottom and there's a little wizard to select the right image for your needs, don't worry too much you can always rebase :)
The download tends to fail for me. Have to constantly restart it and pray it finishes. Then the installer seems to be error-prone. I actually have to reinstall it today because, somehow, simply restarting my PC results in a slideshow from the boot screen onwards. I always seem to have issues with the installer Fedora-based distros use.