Neat! As someone who never had that much luck with Spotify’s recommendations, this is part of what worked for me.

When I want a specific mood or even artist for music I own, I use navidrome.

To expand that collection I use bandcamp (and bandcamp Fridays).

To discover new stuff, I rely on recommendations from friends or go wide with sources like NTS radio or similar.

Can show us how you configured the internal part?