Hi and welcome to the forum.
How were those browsers installed, Flatpak or Snap by any chance?
Flatpak and Snap apps are self-contained and effectively run in a sandbox. They have limited system integration as a result and that may be why other apps and sound test work OK, but they do not.
Firefox is now available as a .apt (that has also been the standard package since Z17.3, wheras Z17 originally shipped with Flatpack version)
See: [Z17 BETA/UBUNTU 22] How to get the native Firefox instead of flatpak/snap