I want to sync my playlist from Mac Music to my new iPhone 16 but im seeing a problem

yesterday, I created playlists on the Mac and then when I looked at my iPhone in Folder App, I was able to select specific. playlists to sync. it worked

however, today I created a new playlist on the Mac, but I don't see it when I follow the same procedure and look for it in the iPhone in folder app, I do see the others from yesterday.

what am I doing wrong?