Navigation Header Not Appearing On First Page After Initial Page

I have set up a login page through Firebase. After logging in, the first page that appears does not have the navigation header on it. All pages navigated to after that do show the header. I would like the header, even though there is no back button or anything, to show up on all of the pages including the ‘first’ page after logging in. How do I implement this?

I have the bottom navigation turned off and the header navigation element is set to static text.

I also noticed that when you set the Text in the header to a static value the “back” button just says the page number. You can see this in the 2nd photo. I would also like to fix this.