I have read the help information, and I do not see "Sync Library" as an option to choose in either my Music>Settings>Preferences>General Tab OR under my Settings on my iPhone for Music. I am up to date on all software.
iPhone 12, iOS 16
Sync Library is a option for Apple Music subscribers.
Apple has a similar matching service called iTunes Match.
Subscribe to iTunes Match - Apple Support
Then there is {Finder/iTunes}-based synchronization, where you use your computer to load individual iPhones (or iPads or iPods) with music from the library on a master Mac or PC.
The link above is for Apple Music subscribers. See Sync your iPhone, iPad or iPod using your computer – Apple Support (AU)
Thanks for the help. I wasn’t pulling up the device to sync in Finder. That resolved my problem.
I can not Sync my iTunes Music across multiple devices.
