How to add TabView/anything under NavigationView?

Question

I have this code to display NavigationView with toolbar, searchable:

var body: some View {
    NavigationView {
        TabView(selection: $selectedIndex) {
            ...
        }
        .tabViewStyle(.page(indexDisplayMode: .never))
        .toolbar {
            ...
        }
        .searchable(text: $searchText)
    }
}

I want to achieve a result with tabs similar to this:

However, I can't add anything except searchable and toolbar to the NavigationView.

I tried to make it with NavigationStack instead, TabView, and all ToolbarItemGroup placements - but no luck.

Please help, thank you.