All my songs disappeared

As long as your account is still active you can try this:

Turn iCloud Music Library off, then on again

On your iPhone, iPad, or iPod touch:

1. 1. Go to Settings > Music, then tap iCloud Music Library to turn it off.
   2. Close Settings.
   3. Go to Settings > Music, then tap iCloud Music Library to turn it on.
   4. Turn on “Show Apple Music

 If they still don’t load:

1. in settings- iTunes App Store - your name - sign out- then sign back  in - you will need to turn iCloud music library back on again.

Unless there was a problem with your payment method (it happens).

check if your subscription is still active:

View, change, or cancel your subscriptions - Apple Support

verify your payment method:

In Settings - your name - Payment and shipping

make sure that you're signed in to all of your devices with the Apple ID that you use with Apple Music