How to recover a lost playlist from Apple Music on iPhone 17 Pro Max?

I recently purchased the new iPhone 17 pro max and shortly after transferring all my stuff I realized that I lost my largest and most favorite playlist from Apple Music, and worst of all it has disappeared from all of my apple devices. Does anyone know what happened and if I can get it back? I’m so disappointed!!!! I thought subscribing to Apple Music would protect me from that happening.

[Re-Titled by Moderator]