I'm not sure if it's something that varies heavily by country, but I just switched back from Apple Music to Spotify and couldn't be happier.
So many artists that I like were missing albums or songs on Apple Music for some reason. One group that I particularly like was missing over 3/4 of their music at Apple. All available in iTunes of course, but I don't feel like paying for individual songs on top my subscriptions. Worth noting that I'm in Canada and I'm talking about mostly Electronic, Metal, and Jazz tracks.