It's not a quick process, and there's probably still something there as you read this, but the idea is to remove all songs from Spotify because of the investments they are making in weapons. Music should not be used for that, and surely one company alone cannot decide its fate, so I invite everyone to abandon Spotify and switch to other alternatives. Deezer works great, Amazon Music is included with Prime, and there are a thousand other alternatives! I know you don't want to lose all your playlists, I understand, who would? Below is a website with a guide on how to move them. Pirate your music instead! But don't give your music to weapons!

Soundiiz, a website to transfer your playlist!