Greetings!
One app that can make "safari-based" progressive web apps on Mac, can be found at
https://www.fluidapp.com
, though that one is "freemium."
In addition, I did try using the Firefox PWA extension to install the YouTube PWA as an example:
https://addons.mozilla.org/en-US/firefox/addon/pwas-for-firefox/
, though that seems to not be working at the moment with this browser.
Keep in mind, I am running MacOS 13 and Home Brew is at the moment not officially supported with said version.
More info on Firefox PWA extension at:
https://github.com/filips123/PWAsForFirefox