Conflict between Long press selection and CollectionView default selection and other gestures

Question

I have a collectionview and I want to enable selection only on longpress and once the long press is enabled I don't want any gestures to be invoked on that image or item in collectionview.

If tapped any item during longpress it should select/deselect the item.

Problem: Now on longpress the item is selected and if tap any item in UI it is deselecting the checkmark because the state is changing to Normal.

can you help on this

  <DataTemplate x:Key="GridTemplate">
     <Grid Margin="5,5" >
         <VisualStateManager.VisualStateGroups>
             <VisualStateGroup Name="CommonStates">
                 <VisualState Name="Normal">
                     <VisualState.Setters>
                         <Setter TargetName="SelectionBorder" Property="BackgroundColor" Value="LightGray"/>
                         <Setter TargetName="SelectionImage" Property="IsVisible" Value="False" />
                     </VisualState.Setters>
                 </VisualState>
                 <VisualState Name="Selected">
                     <VisualState.Setters>
                         <Setter TargetName="SelectionBorder" Property="BackgroundColor" Value="{StaticResource Primary}"/>
                         <Setter Property="BackgroundColor" Value="White"/>
                         <Setter TargetName="SelectionImage" Property="IsVisible" Value="True" />
                     </VisualState.Setters>
                 </VisualState>
             </VisualStateGroup>
         </VisualStateManager.VisualStateGroups>
         <Image Source="{Binding AbsolutePath}" HeightRequest="200" WidthRequest="200" Aspect="Fill" ZIndex="0">
             <Image.Behaviors>
                 <toolkit:TouchBehavior LongPressCommand="{Binding BindingContext.LongPressCommand, Source={x:Reference VideosView}}" LongPressCommandParameter="{Binding .}"  LongPressDuration="1000" LongPressCompleted="OnLongPressCompleted" PressedOpacity="0.6" PressedAnimationEasing="{x:Static Easing.CubicInOut}" PressedScale="0.75" />
             </Image.Behaviors>
             <Image.GestureRecognizers>
                 <TapGestureRecognizer Command="{Binding BindingContext.VideoTapCommand, Source={x:Reference VideoCollectionView}}" CommandParameter="{Binding AbsolutePath}" >                            
                 </TapGestureRecognizer>
             </Image.GestureRecognizers>
         </Image>
         <Label ZIndex="1" Text="{Binding Duration}" TextColor="{StaticResource White}" FontSize="14" FontAttributes="Bold" VerticalOptions="End" HorizontalOptions="Start" Margin="10,12" >
             <Label.Shadow>
                 <Shadow Brush="{StaticResource Black}"
                         Offset="3,3"  
                         Radius="11"   
                         Opacity="0.9" />
             </Label.Shadow>
         </Label>
         <Border x:Name="SelectionBorder" Margin="0,0,14,14" Style="{StaticResource SelectionBorder}">
             <Image x:Name="SelectionImage" Source="Images/selection.svg" Style="{StaticResource SelectionImage}"/>
         </Border>                
     </Grid>
 </DataTemplate>

private void OnLongPress(FileInfo selectedItem)
{
    IsMediaLongPressed = true;
    bool isSelected = SelectedItems.Contains(selectedItem, _fileInfoComparer);
    switch(selectedItem.MediaType)
    {
        case GlobalConstants.Mediatype_Image:
            PhotosOnLongPressHandled?.Invoke(selectedItem);
            break;
        case GlobalConstants.Mediatype_Video:
            CollectionViewSelectionMode = SelectionMode.Multiple;
            VideosOnLongPressHandled?.Invoke(selectedItem); 
            break;
        case GlobalConstants.Mediatype_Audio:
            AudioOnLongPressHandled.Invoke(selectedItem);
            break;
    }
    
}

async void OnLongPressCompleted(object sender, EventArgs e)
{
    await Task.Delay(300);
    _mediaViewModel.IsMediaLongPressed = false;
    _mediaViewModel.IsDebouncing = false;
}