Automation for organizing songs into playlists

[Ruuttu]

I've been using Spotify for about a decade and I never organized my songs into playlists. Now I just have 900+ Liked Songs of various genres and moods, and it's become unbearable. I want to organize my songs into something like "chill music" and "dance music", for example. It's quite a lot of work to do by hand. I wish there was a way to split a playlist (in this case Liked Songs) into several playlists based on automatically detected groups.