I will have to try. But I am a bit of a novice. Not sure what I am looking for.
Just for trying. I added a new page I called “Test Page”. I went into Dashboard> Appearance>Customize and pointed the posts page to that “Test Page” and now my original “Blog” page shows the posts. I pointed the posts back to the “Blog” page and they disappeared.
Yeah, the posts page is set to the Blog page..nothing there.