UT, I still cannot see a map in the Information window of each picture. Hmmmmm. Just the written location of the nearest city.
What does the Information panel for your photos look like?
Could you post a screenshot?
I the View menu in Photos, did you enable the the option "View Metadata > Locations"?
Did you mean the current version if macOS 11.13.3? When I view "About this mac", and then I click "Software Update", it tells me "No Updates Available".
With OS X El Capitan (10.11.6) you are running the last version of El Capitan. There are no more updates. To get the current version of MacOS X you need to install a system upgrade, not an update. This link will take you to the upgrade site: macOS High Sierra Preview - Apple
And this page lists the hardware requirements: https://support.apple.com/kb/SP765?locale=en_US