Spaces between control on xamarin

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C#

Xamarin

I use the following code to create a xamarin form using visual studio for android when i look into the output lot of spaces between the controls.

Attachment contains output in emulator. Please let me know how to reduce the space between the controls[enter image description here][1].
Code use to create a form:

<?xml version="1.0" encoding="utf-8" ?>
<TabbedPage xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:d="http://xamarin.com/schemas/2014/forms/design"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
             mc:Ignorable="d"
             x:Class="SCC.Home">
    <ContentPage Title="Home" >
        <StackLayout>
        <Grid  ColumnSpacing="0" RowSpacing="0">
            <Grid.RowDefinitions>
                <RowDefinition></RowDefinition>
                <RowDefinition></RowDefinition>
                <RowDefinition></RowDefinition>
                <RowDefinition></RowDefinition>
            </Grid.RowDefinitions>
            <Grid Grid.Row="0" >
                <CarouselView x:Name="Imageslider">
                    <CarouselView.ItemTemplate>
                        <DataTemplate>
                            <Image Source="{Binding .}" Aspect="AspectFill" HorizontalOptions="FillAndExpand" VerticalOptions="FillAndExpand"></Image>
                        </DataTemplate>
                    </CarouselView.ItemTemplate>
                </CarouselView>
            </Grid>
            <Label Grid.Row="1" HorizontalOptions="Center" VerticalOptions="CenterAndExpand" TextColor="Black" Text="About Us" VerticalTextAlignment="Center" FontSize="Large" />
            <Label Grid.Row="2" Padding="2,0,2,0" HorizontalTextAlignment="Center"  VerticalOptions="Center" HorizontalOptions="Center"  Text="Surabi Institute of Hotel Management and Fashion Technology recognized by Bharathidhasan University. Surabi Institute of Hotel Management and Fashion Technology was established in the year of 2006. The aim of the Founder is to Provide Hotel Management / Fashion Technology to the poor and Need of the Society">
            </Label>
            <!-- Place new controls here -->
            <Label Grid.Row="3"   
           HorizontalOptions="Center" VerticalOptions="CenterAndExpand" TextColor="#FF5F23" Text="Saravana Educational & Welfare Trust" />
        </Grid>
        </StackLayout>
    </ContentPage>
    <ContentPage Title="Courses" />
  <ContentPage Title="Contact Us" />
  
</TabbedPage>

What I have tried:

<?xml version="1.0" encoding="utf-8" ?>
<TabbedPage xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:d="http://xamarin.com/schemas/2014/forms/design"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
             mc:Ignorable="d"
             x:Class="SCC.Home">
    <ContentPage Title="Home" >
        <StackLayout>
        <Grid  ColumnSpacing="0" RowSpacing="0">
            <Grid.RowDefinitions>
                <RowDefinition></RowDefinition>
                <RowDefinition></RowDefinition>
                <RowDefinition></RowDefinition>
                <RowDefinition></RowDefinition>
            </Grid.RowDefinitions>
            <Grid Grid.Row="0" >
                <CarouselView x:Name="Imageslider">
                    <CarouselView.ItemTemplate>
                        <DataTemplate>
                            <Image Source="{Binding .}" Aspect="AspectFill" HorizontalOptions="FillAndExpand" VerticalOptions="FillAndExpand"></Image>
                        </DataTemplate>
                    </CarouselView.ItemTemplate>
                </CarouselView>
            </Grid>
            <Label Grid.Row="1" HorizontalOptions="Center" VerticalOptions="CenterAndExpand" TextColor="Black" Text="About Us" VerticalTextAlignment="Center" FontSize="Large" />
            <Label Grid.Row="2" Padding="2,0,2,0" HorizontalTextAlignment="Center"  VerticalOptions="Center" HorizontalOptions="Center"  Text="Surabi Institute of Hotel Management and Fashion Technology recognized by Bharathidhasan University. Surabi Institute of Hotel Management and Fashion Technology was established in the year of 2006. The aim of the Founder is to Provide Hotel Management / Fashion Technology to the poor and Need of the Society">
            </Label>
            <!-- Place new controls here -->
            <Label Grid.Row="3"   
           HorizontalOptions="Center" VerticalOptions="CenterAndExpand" TextColor="#FF5F23" Text="Saravana Educational & Welfare Trust" />
        </Grid>
        </StackLayout>
    </ContentPage>
    <ContentPage Title="Courses" />
  <ContentPage Title="Contact Us" />
  
</TabbedPage>