Site map does not show all pages

Can someone please try to help me with this problem:

When I order a site map, only 11 pages of my site https://www.FloridaGreenHomeBrokers.com gets mapped. However, there are close to 60 pages.
Coincidentally or not, intentionally only 11 pages can be reached via the navigation bar, while the remainder can not. They are only meant to be found on searches.

The pages that are not mapped were created in exactly the same way as those that were mapped: Each one in its own category. The only difference between them is that I unchecked the box to make them visible on the navigation bar.

Although there are links from the Home page to some of the mapped pages, there aren’t links for all, like the “about” page for example. So the mapped pages aren’t linked differently to the unmapped pages. The only difference is that the box to show them on the navigation was checked. So this is a mystery to me. However, clearly the navigation bar has something to do with the problem.

Any ideas?

Thanks,

Marius