Move and reposition active window

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VB

.NET

Windows 11 Photos app has recently been updated and now opens in the middle of the screen and only remembers the position I move it to until I close it, which has been accepted as a bug and will be fixed.
So I thought I'd dust off the cobwebs and write a bit of code in Visual Studio 2022 using vb.net.
This works in a Hookutil Class:-

<dllimport("user32.dll", entrypoint:="SetWindowPos" )="">
Public Shared Function SetWindowPos(hWnd As IntPtr, hWndInsertAfter As IntPtr, x As Int32, y As Int32, cx As Int32, cy As Int32, wFlags As Int32) As IntPtr
End Function
Public Shared Sub HookWindow()
    Dim Processes As Process() = Process.GetProcessesByName("Photos")
    For Each p As Process In Processes
        Dim handle As IntPtr = p.MainWindowHandle
        SetWindowPos(handle, HWND_BOTTOM, 500, 0, 1040, 830,SWP_NOZORDER)
    Next
End Sub

BUT what I would really like to do is move the Window that was last opened to the same position, but no matter what I try I get no errors but it doesn't work, probably due to my misunderstanding of the relationship between the desktop and other/child windows for an application e.g. there is only 1 Photos process which can have multiple windows.

I created the project as a Console App and run the executable from a shortcut pinned to the taskbar; I changed it's Application Type to Windows Service to stop the console window displaying.

I have tried using GetDesktopWindow(), GetWindow(),

What I have tried:

<dllimport("user32.dll", entrypoint:="GetDesktopWindow" )="">
Public Shared Function GetDesktopWindow() As IntPtr
End Function