Q: My  iTunes match subscription is over on August 1. My iTunes match music is available for me now via Apple Music trial I started on Sept. 3. If I cancel iTunes Music and pay for iTunes Match before end of trial on December 3 will I loose my old library?

iTunes Match and Apple Music are two separate and independent services. See if the info in this link provide the answer to your questions:

iCloud Music Library: Understanding differences between Apple Music and iTunes Match - Apple Support

Cheers,

GB

HI,

You lose access to music in the cloud when your iTunes Match subscription expires. Apple will retain library in cloud for thirty days. When you subscribe to match again, your iTunes library will be rescanned. Therefore, it is essential that you use your original library and also have a back up.

WHen your Apple music free trial expires, you lose access to Apple music tracks. Be aware that downloading matched tracks works differently between match and Apple music. Apple music adds DRM to those tracks.

Jim

HI,

Not a lot that you can do other than contact Apple support. Contact Apple for support and service - Apple Support

If you renew your Apple Music subscription to will still have acces to your music but if you download it,your music might have DRM applied.

Jim

i will like to cancel the service of music on my I phone

This is how you do it: Manage your Apple Music membership on your iPhone, iPad, iPod touch, Mac, or PC - Apple Support