I know it sounds simple, but it's often overlooked. Could you try restarting your device? Sorry if this may sound a bit repetitive but if that doesn't help, try a quick clean reinstall of the app by following these steps.
Make sure Spotify is up to date (current version 8.4.85). I'd also recommend using the Sign Out Everywhere and Remove Offline devices from your Spotify account page to see if that helps :)
If you're still having trouble, could you let me know the exact version of Spotify and the exact version of the operating system you're running?
I'll see what I can suggest next!
LoxerRock Star 16
Help others find this answer and click "Accept as Solution".
If you appreciate my answer, maybe give me a Like.
Don't worry, when you add songs on spotify you like, they will play. Then, when spotify sees what other music you like, similar to the songs or genre, it automatically adds songs onto the playlist you may like. There is no way to delete it, but you can press the button, "Do Not Play Again"