If you haven't, try https://beets.io to tag and organize your collection. I have been using it for years and it's pretty good.
Doing an experiment, I stopped using spottily and have been trying to replace it with open source software.
For desktop:
yt-dlp for downloading, https://picard.musicbrainz.org for tagging it, and https://flathub.org/en/apps/org.gnome.Lollypop for a music player
For mobile:
newpipe for downloading, and https://play.google.com/store/apps/details?id=org.fossify.musicplayer as the player
Then I use Syncthing to sync all the music across my devices. So far its been nice, and I have the mp3 files so it always works offline unlike spottily
Discussion
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