Missing old contacts on iPhone 13 Pro Max and MacBook Air
I have an iPhone 13 Pro Max, up-to-date IOS, and a new MacBook Air (and an older MacBook Pro). I recently noticed that some of my contacts are missing. People from a long time ago for whom I know I had contact information. Now I am concerned, because this has happened before, but not so many at one time that raised a red flag. How can I compare my current contacts to an older version (going far back)? And how is it possible that you can lose contacts like this? I have not deleted them, intentionally or accidentally. TIA
[Re-Titled by Moderator]
Original Title: Missing SOME contacts
iPhone 13 Pro Max, iOS 18