Given how Apple Music has completely fucked up my wife’s music collection, I can’t imagine them being able to unfuck your situation at all. So sorry.
Unfortunately I still don't know a service I can use that will allow me to sync my current MP3s / what I have in Apple Music, and export it if I need it. There's really an issue of owning data and being able to take it elsewhere :/
I'm relatively happy with Tidal, but there are definitely a number of moments with it that make me sigh and internally say "see, this is why Spotify is winning". so much of it would be easy to change too, they just don't do it.
I've got Spotify as a native app in my 2024 ev and it's strange in that it starts songs like 1 second in, all the time. very unclear how that happens other than a software bug.