MAUI: Red circle is not visible on the UI

I am showing a list of alerts on the UI using a View. If the alert is not read, I need to show a red circle on the left side of it and I need to show the unread count on the tab icon. But currently only a gray circle is showing on the UI and count is also no showing.

Please check the below screenshot:

Xaml:

<ctrl:SwipeableListView VerticalOptions="Fill" HorizontalOptions="Fill"
                        SelectedItemCommand="{Binding SelectedItemCommand, Mode=TwoWay}"
                        LeftButtonCommand="{Binding ReadCommand}"
                        LeftButtonEnabled="true"
                        RightButtonEnabled="true"
                        RightButtonCommand="{Binding ArchiveCommand}"
                        Items="{Binding Notifications}"
                        AutomationProperties.IsInAccessibleTree="False"
                        EmptyView="{x:Reference _stackLayout}" />

SwipeableListView.cs:

public class SwipeableListView : View
{
    public static readonly BindableProperty ItemsProperty =
        BindableProperty.Create(nameof(Items), typeof(IEnumerable<Swipeable>), typeof(SwipeableListView),
        new List<Swipeable>(), propertyChanged: OnItemsChanged, defaultBindingMode: BindingMode.TwoWay);
    public IEnumerable<Swipeable> Items
    {
        get { return (IEnumerable<Swipeable>)GetValue(ItemsProperty); }
        set { SetValue(ItemsProperty, value); }
    }
    public static readonly BindableProperty LeftButtonEnabledProperty =
        BindableProperty.Create(nameof(LeftButtonEnabled), typeof(bool), typeof(SwipeableListView), true);
    public bool LeftButtonEnabled
    {
        get { return (bool)GetValue(LeftButtonEnabledProperty); }
        set { SetValue(LeftButtonEnabledProperty, value); }
    }
    public static readonly BindableProperty LeftButtonColorProperty =
        BindableProperty.Create(nameof(LeftButtonColor), typeof(string), typeof(SwipeableListView), "#007ac9");
    public string LeftButtonColor
    {
        get { return (string)GetValue(LeftButtonColorProperty); }
        set { SetValue(LeftButtonColorProperty, value); }
    }
    public static readonly BindableProperty RightButtonColorProperty =
        BindableProperty.Create(nameof(RightButtonColor), typeof(string), typeof(SwipeableListView), "#004aa9");
    public string RightButtonColor
    {
        get { return (string)GetValue(RightButtonColorProperty); }
        set { SetValue(RightButtonColorProperty, value); }
    }
    public static readonly BindableProperty RightButtonEnabledProperty =
        BindableProperty.Create(nameof(RightButtonEnabled), typeof(bool), typeof(SwipeableListView), true);
    public bool RightButtonEnabled
    {
        get { return (bool)GetValue(RightButtonEnabledProperty); }
        set { SetValue(RightButtonEnabledProperty, value); }
    }
    public static readonly BindableProperty SelectedItemCommandProperty =
        BindableProperty.Create(nameof(SelectedItemCommand), typeof(ICommand), typeof(SwipeableListView), null);
    public ICommand SelectedItemCommand
    {
        get { return (ICommand)GetValue(SelectedItemCommandProperty); }
        set { SetValue(SelectedItemCommandProperty, value); }
    }
    public static readonly BindableProperty LeftButtonCommandProperty =
        BindableProperty.Create(nameof(LeftButtonCommand), typeof(ICommand), typeof(SwipeableListView), null);
    public ICommand LeftButtonCommand
    {
        get { return (ICommand)GetValue(LeftButtonCommandProperty); }
        set { SetValue(LeftButtonCommandProperty, value); }
    }
    public static readonly BindableProperty RightButtonCommandProperty =
        BindableProperty.Create(nameof(RightButtonCommand), typeof(ICommand), typeof(SwipeableListView), null);
    public ICommand RightButtonCommand
    {
        get { return (ICommand)GetValue(RightButtonCommandProperty); }
        set { SetValue(RightButtonCommandProperty, value); }
    }
    private static void OnItemsChanged(BindableObject bindable, object oldValue, object newValue)
    {
        var swipeableListView = bindable as SwipeableListView;
        if (ItemsChangedEvent != null)
            ItemsChangedEvent.Invoke(swipeableListView, (IEnumerable<Swipeable>)newValue);
        UpdateEmptyView(swipeableListView);
    }
    public static event EventHandler<IEnumerable<Swipeable>> ItemsChangedEvent;
    public static readonly BindableProperty EmptyViewProperty =
       BindableProperty.Create(nameof(EmptyView), typeof(View), typeof(SwipeableListView), null, propertyChanged: OnEmptyViewChanged);
    public View EmptyView
    {
        get { return (View)GetValue(EmptyViewProperty); }
        set { SetValue(ItemsProperty, value); }
    }
    private static void OnEmptyViewChanged(BindableObject bindable, object oldValue, object newValue)
    {
        UpdateEmptyView((SwipeableListView)bindable);
    }
    private static void UpdateEmptyView(SwipeableListView swipeableListView)
    {
        if (swipeableListView?.EmptyView != null)
        {
            if (swipeableListView.Items == null || !swipeableListView.Items.Any())
            {
                swipeableListView.EmptyView.IsVisible = true;
            }
            else
            {
                swipeableListView.EmptyView.IsVisible = false;
            }
        }
    }
}

Handler code is very lengthy, so adding it as a text file below:

SwipeableListViewHandler.txt

In handler there is below code:

NewInfoIndicatorButton = itemView.FindViewById<Button>(MAUI.Clinical6.Resource.Id.button_red_circle);

button_red_circle:

<Button
    android:id="@+id/button_red_circle"
    android:layout_width="10dp"
    android:layout_height="10dp"
    android:layout_marginTop="7dp"
    android:layout_marginRight="2dp"
    android:background="@drawable/zzz_red_circle"
    android:enabled="false" />

zzz_red_circle:

<?xml version="1.0" encoding="UTF-8" ?>
<shape
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="oval">

   <solid 
       android:color="#BE1717"/>

   <size 
       android:width="2dp"
        android:height="2dp"/>
</shape>

I have added the zzz_red_circle under the .NET MAUI Class Library projects ->Platform -> Android -> Resources -> Drawable folder and set the build action to AndroidResource. But the red circle is not visible on both sections.