Hello
I understand you would like to know what happened to the playlists you created and the songs you downloaded for offline listening when you subscribed to Apple Music ten months ago. The media and information is only available while you are an Apple Music Member. If you purchased music from the iTunes Store, the purchases are tied to your Apple ID and available for redownload.
Redownload apps, music, movies, TV shows, and books from the iTunes Store, iBooks Store, and App Store
With your new Apple Music membership, your existing iTunes library will once again be uploaded to iCloud Music Library and you can access the Apple Music catalog and download music for offline listening to your iPhone for as long as you subscribe to the service.
Add and download music, shows, and movies from the Apple Music catalog
Use Apple Music on your iPhone, iPad, iPod touch, or Android phone
Take care.