On macOS there's also Meta[0] which I found better than mp3tag.
You can also always use builtin Music.app for organization + tagging. I've been using it (or iTunes before) to manage my local music library for 10 years now and it's the best thing of my life, a big plus is I can also sync my library to my iPhone (altho the software quality downgraded a lot since the Big Sur rewrite). I also wonder if there's a cross platform alternative: a good tagger + a good player / organizer + easy to sync to phone + a good player on phone