Blog posts not on blog page

Newbie here. I am fiddling around with learning and have tried arranging the template blog page to show on the main menu however the blog posts do not update and new posts do not show up. Then tried setting up a new blog page but when adding posts they show up as sub menu pages. Clearly am not understanding the Sitemap concept. User guide not much help.
Atomic theme.


It’s possible there’s something going on with older dates on blog posts and the board functionality that builds the category page. Particularly if you’re running version 9.1.1 or earlier, this was starting to become an issue as the initial release date of the sample content got older.

I put this quick video together which might help you and others facing this issue: