Cannot delete photos in iPhone library
I want to delete photos from iPhone Photos library to free up space but the delete option is greyed out or unavailable for all photos. All photos are backed up to my computer via the finder and I do not use any iCloud services. I am running the latest iOS, have updated all apps and have restarted the phone a few times.
I unsynced all photos from my Mac (see attached screenshot), did a sync/backup, and restarted the phone but still can't delete anything.
I would be very grateful for any assistance here!
iPhone 14 Pro, iOS 18