Am I understanding Navigation and Regions properly?

[myermian]

I am working on a .NET MAUI application, I am using the Prism.Maui 9 NuGet package.

I looked at a few apps on my phone for inspiration. Beyond the Login/Signup page, my Chase Bank application takes me to a landing page of account information. In the top-right is a user icon which navigates entirely to a page of "Profile & Settings". But, on the main page at the bottom are 4 tabs: Accounts, Pay & collect, Benefits & travel, and More ... Other applications behave similarly in terms of having the tabs at the bottom for the main landing page content and a settings or accounts icon in the top-right or top-left.

I want to make sure I'm doing things properly here. I started my application off by creating a MainPage which has tabbed items at the bottom for different content. I utilized Prism Regions to load the main content. I'm not wondering if this is correct or if I should be utilizing deep linking and the NavigationService instead?

XAML:

<ContentView Grid.Row="1" prism:RegionManager.RegionName="MainPageContent" />

ViewModel

private void OnUpdateActiveMainPageContent(IMainPageContent tab)
{
    if (tab is not null)
    {
        RegionManager.RequestNavigate("MainPageContent", tab.ContentIdentifier);
    }
}

I was trying to figure out how to utilize the Navigation Service to navigate to an entirely new page (not just load content on a selected tab). On my MainPage I have a gear icon in the top-right corner for settings, this should replace the entire MainPage with the SettingsPage, not simply load the SettingsPage into the MainPageContent region. On the SettingsPage itself, it should have a navigate back button that when clicked should have a way of navigating back, but the documentation is unfinished or outdated.

Honestly, at this point I really wonder if I'm structuring my project properly at all. I saw some other posts about Navigation and Tabbed Navigation and that's why I wonder if I'm using Regions and Navigation correctly.