Missing ripped songs from iTunes after Apple Music subscription

I had over 16K songs in iTunes before subscribing to iTunes music. After I cancelled MOST are gone. I realize anything I download through Apple music goes away, but these are songs I ripped from CDs I owned for many decades I no longer have.

I currently have TimeMachine backups going back to September 2022, but I do not see the music in question in any user/music folders, so I have nothing to restore from. Apple has caused me to lose many, many thousands of songs I legally owned.

[Re-Titled by Moderator]