Have you tried Tempo (FOSS)?
I use LawnchairRelease, a fork of one of the devs from Lawnchair. You can also use the original Lawnchair Launcher
Have you tried Harmony Music?
Forgotten apps: Lawnchair(Release) together with Arcticons. Very minimalistic!
Maybe you can try Discreet Launcher. It’s 1.41 MB.
Also the Phone app from Fossify has been released. Fossify Phone. Use Obtainium to download the Phone app.
I’m running Navidrome on my Raspberry pi (4). On my phone (Pixel 8) I use Symfonium to connect with Navidrome. When I’m travelling I use Tailscale + Mullvad + Symfonium to play music from my rpi.