XAML code for button input in the lower right corner

I am trying to get my floating action button in the bottom left corner of my application.

It currently looks like this:

And I want it to look like this:

My XAML code:

<?xml version="1.0" encoding="utf-8" ?>
 <ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
         xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
         xmlns:local="clr-namespace:xxx;assembly=xxx"
         x:Class="xxx.xxx.xxx.xxxx"> 

 <AbsoluteLayout HorizontalOptions="FillAndExpand"  VerticalOptions="FillAndExpand">

    <StackLayout AbsoluteLayout.LayoutFlags="All" AbsoluteLayout.LayoutBounds="0,0,1,1">

        <StackLayout Orientation="Vertical" VerticalOptions="StartAndExpand">
            <StackLayout HorizontalOptions="CenterAndExpand"  Margin="0,15,0,0" Orientation="Vertical">
                <!--<local:CustomImage Source="logo.png" HeightRequest="100" WidthRequest="100" HorizontalOptions="Center" />-->

                <local:CustomImageButton  WidthRequest="150" Image="Foto.png" ClassId="Eigendommen" x:Name="buttonFoto" HeightRequest="150"/>

            </StackLayout>

            <StackLayout Orientation="Vertical" VerticalOptions="CenterAndExpand" Margin="10,0,0,0" x:Name="MainStack" >
                <BoxView BackgroundColor="#F15A35" HeightRequest="1" WidthRequest="400" Margin="0,-2,0,5" />
                <Label Text="Toegevoegd:" FontSize="Medium" FontAttributes="Bold" />
                <StackLayout Orientation="Horizontal">
                    <StackLayout Orientation="Vertical"  IsVisible="False" Margin="10,0,10,0" x:Name="hideImage1">
                        <local:CustomImage HeightRequest="100" WidthRequest="100"/>
                        <StackLayout Orientation="Horizontal">
                            <Label Text="Verwijderen" FontSize="Small" VerticalTextAlignment="Center" />
                            <local:CustomImageButton Image="close_zwart.png" BackgroundColor="White" Clicked="Hide_Image_Click" HeightRequest="40" WidthRequest="40" />
                        </StackLayout>
                    </StackLayout>
                    <StackLayout Orientation="Vertical" Margin="10,0,10,0" x:Name="hideImage2" IsVisible="False">
                        <local:CustomImage HeightRequest="100" WidthRequest="100"/>
                        <StackLayout Orientation="Horizontal">
                            <Label Text="Verwijderen" FontSize="Small" VerticalTextAlignment="Center" />
                            <local:CustomImageButton Image="close_zwart.png" Clicked="Hide_Image_Click" BackgroundColor="White" HeightRequest="40" WidthRequest="40" />
                        </StackLayout>
                    </StackLayout>
                    <StackLayout Orientation="Vertical" Margin="10,0,10,0" x:Name="hideImage3" IsVisible="False">
                        <local:CustomImage HeightRequest="100" WidthRequest="100"/>
                        <StackLayout Orientation="Horizontal">
                            <Label Text="Verwijderen" FontSize="Small" VerticalTextAlignment="Center" />
                            <local:CustomImageButton Image="close_zwart.png" Clicked="Hide_Image_Click" BackgroundColor="White" HeightRequest="40" WidthRequest="40" />
                        </StackLayout>
                    </StackLayout>
                </StackLayout>

            </StackLayout>

        </StackLayout>

    </StackLayout>

    <StackLayout 
             AbsoluteLayout.LayoutFlags="All"
             AbsoluteLayout.LayoutBounds="1,1,0.25,0.25">

        <StackLayout HorizontalOptions="End" VerticalOptions="End" Margin="0,0,0,0">
            <local:FloatingActionButton Image="checktaak.png" x:Name="insertTaak"  HeightRequest="60" WidthRequest="60" />
        </StackLayout>

    </StackLayout>

</AbsoluteLayout>

</ContentPage>

      

        
        
        
      

    

You can find my floating action button at the bottom of all the code (latest stacklayout). if you need more code, let me know in the comments. Edit I want the button to always be there even if it overlaps another stacklayout file