iTunes sync imported music files to 2nd iPhone
I have an iTunes library of imported music files on my PC. I open iTunes (just updated) and then when I connect the iPhone 13 (iOS 16.2), it immediately asks me if I want to start as a new phone or backup from one of 4 old iPhone backups. When I cancel out of that and select File/Devices the Sync is grayed out and the little device graphic that is supposed to be at the top is not there. I just want to sync my imported music files to this iPhone 13, which does have a different Appleid than my iTunes account. Any assistance is greatly appreciated. Thanks.
Windows, Windows 10