Radio was used to discover new music decades ago, but paying a radio station (directly) to play a song is illegal (payola), so DJs had to break new songs, styles, and have a wide array of music offered (within the theme of the station).
Spotify now has the ability to engage in a legal version of "digital" payola, so their handcrafted group of artists by major labels are peppered into their hundreds of in-house playlists, disguising this business practice as a wide array of music selection.
This is detrimental to music discovery, because discovering a song is a lot less meaningful than discovering a new album and consuming the project as a whole and appreciating its composition.
So you're discovering new music, but none of it is memorable, because listening to music in 2024 (for a lot of people) is often a wall of slightly groovy background noise, with the occasional standout track that you probably toss into your own personal playlist.
How I fixed this:
1. Disable the 'autoplay' feature
2. Don't use playlists and listen to albums (except for when I'm in a pinch or hosting a party)
3. Intentionally discover a new genre every few months and go down a rabbit hole. My current new genre is South African Amapiano. Excellent stuff.
4. Discover music across different genres and time periods using RateYourMusic.