I have the exact opposite experience, recently when a playlist I have is over, I find that every recommended track that plays after, I love so much I end up putting in my playlist
I liked when you could make a playlist radio and do that manually. That's been removed now of course.
On desktop I believe you can still take any of your playlists and tell it to generate a "similar" playlist. Works really well.
Oops, I'm four days late but - no, it appears to have been removed there too. If I'm missing it please let me know.
My taste in music is apparently so varied, that if I want to keep the "daily" Spotify list as I want them, I have to limit myself in variation in what I listen to, otherwise they will get too mixed up and I will not enjoy them anymore.
So I use other peoples recommendations or music review sites instead to find new music/bands/artists.
I tried the spotify AI dj service a couple of times, but it has not been a good experience, when it tries to push in a new direction it has never really gotten it right for me.