SharePoint Navigation Bar Moved to Side

Hello,

We have a communications page that normally has navigation across the top of the page, with options for a mega-menu/cascading.  There was also a pane on the left side which allowed for audience targeting settings.  I believe we may have inadvertently changed a setting which has relocated the navigation to the left side of the page and removed the audience targeting options.

The only options I am aware were changed were document sets and the content organizer.  These were turned off but we still do not have the option to return the navigation bar to the top of the page.