Is it possible to configure firejail in such a way that when you install new applications, all applications automatically are configured to go through firejail? And if so, how would I do this?
Is it possible to configure firejail in such a way so that all applications automatically run under it?
You can find answers here: https://wiki.archlinux.org/index.php/Firejail.
I’ve tested firejail on endeauvour OS and it works for all programs who have a preconfigured profile.