Get it here: https://antonidol.nl/wp-content/uploads/2021/07/DarkForestWindowsTheme.zip
Here’s how it looks:
Learned at lot 
Oh, I had to remove the original Background file, because it was way too large to include. You can find it here: https://www.pexels.com/nl-nl/foto/groen-gras-op-bos-418831/