THE SINGLE BEST STRATEGY TO USE FOR TROUBLE BACKING UP IPHONE TO COMPUTER

Thanks for all your enable but nothing labored as I still can’t do an iCloud back up. I did all the things you reported and in many cases restored from scratch and both of those my iPhone 13 & iPhone XR concurrently can now not backup to the cloud. I also reset my modem but all the things will work on equally iPhones just the ICloud back up now n