Playlists vanished from iPhone music.

Planned to go for a jog today. AirPods in. Looked for usual “jogging” playlist on watch. No where to be found. Looked on phone for the playlist I’ve had for YEARS!!!!!! No where to be found. Beyond infuriating as connecting AirPods to watch/phone is nearly always a rigmarole. This new problem just adds to the annoyance. These are songs on my own music app. Not any paying app. Any help would be appreciated.