Spotify are not a “big tech incumbent”?

Qobuz also sells DRM free files in both high resolution and lossy file formats. https://help.qobuz.com/en/articles/10167-what-are-the-different-audio-formats-available-for-download

Bandcamp is US owned, but still worth mentioning I think because of their commitment to high revenue sharing, about 80-82% goes directly to the artists. They have custom playlists, and offer high quality formats as well.

If the goal is a quality product and an ethical approach to supporting artists I'm not dead set on only using European alternatives

Qobuz is unavailable in Poland. So much for being European.

For Quboz, there's also an option to buy albums or single tracks. You can just download the DRM-free high-res audio files.