So I've found out from other posts that Xcode 13.4.1 won't debug apps on iPhones with iOS 15.6.
The solution everyone that everyone seems to agree on is to go back to Xcode 13.3.1.
While I am downloading the xip file for that version, I want to check first on how to install the older version? I don't need to mess things up any worse than they are now.