itunes on pc & autofill music on iphone
itunes keeps autofill music on my iphone 7. I have "manually manage music" checked device summary page in itunes & the "prevent ipods, iphones, &ipads from syncing automatically" option check in device preferences. However when I delete songs from the iphone itunes will start automatically coping / autofilling songs to the iphone. I'd like this to stop so that I can delete a bunch of songs then manually add new ones I want. Seems like itunes isn't looking at/obeying/caring about settings. What else do I need to do?
iPhone 7 Plus, iOS 14