I made the mistake if uploading all my mp3s from the 2000s to Google Music then deleted them locally to "save space". Missed the memo on Google Music getting sunset in 2020 (there were other things going on at the time) and rolled into Youtube Red Music Plus (or whatever) and they are now lost and gone forever.

Now I either buy music via Bandcamp and download the FLAC or replace the ones I lost via other methods and store them locally in Plex and play with Plexamp + Tailscale. That should avoid them getting googled again from any service.