I have a couple of questions regarding showing the Hamburger icon which shows the Flyout and going to the previous page.
I Created the default app in Visual Studio and added a second page

I registered the second page in AppShell.xaml.cs

Routing.RegisterRoute(nameof(SecondPage), typeof(SecondPage));

In MainPage.xaml, I added a button which when pressed sends the user to the second page

await Shell.Current.GoToAsync(nameof(SecondPage), true);

This all works. But, while on the first page we can see the Hamburger icon

When arriving on the second page from the button click, we see a back button and no hamburger icon

You can still swipe from the left to show the Flyout but How do I show the hamburger icon on the second page?
My second question is if I add a link to the second page in the Flyout - AppShell.xaml

<ShellContent
        Title="Second Page"
        ContentTemplate="{DataTemplate local:SecondPage}"
        Route="SecondPage" />

When it is clicked then we DO see the hamburger icon

but no back button and if you click back using Android's Back button then it exits the App. So, my second quesiont is How do I make a click on the menu behave like the button being clicked.