Can't create or delete new playlists on Apple Music

Trying with a new user is actually an informative test. Try copying a few (even one) of your music files to an external drive, or place them in a shared folder on your Mac. Then try Apple Music with the new vanilla user, see if creating a playlist works or doesn't work with those music files. If it works, your user account has an issue, which people here can help track down. If the new user cannot create a playlist either, then there is a system wide issue.

Suggest also that you download the free Etrecheck and run it to generate a report (which reveals no identifying info about you, you can check that directly) and post its output here using the Additional text button below. There may be something installed that is interfering, or is incompatible with Sequoia.

I’m having this exact same issue since I tried to delete or create playlists this week...

I’m talking about the laptop Music aka iTunes not the Apple Music subscription (way to differentiate Apple)

[Edited by Moderator]

Restart the Mac, then try the steps in the following support article.

Create, edit, and delete playlists in Music on Mac - Apple Support