The problem with these "magic buttons" is that people forget how to actually work with an image 😉 Look at your Layers panel. It's all there ready for you to go to work:

There's no reason to just accept the result as-is. You can modify it as much as you like. First the unaltered original, just for reference:

New dramatic sky:

- oops, that was a little to melodramatic. More sombre:

There's even a mask there for you. Grab a brush and paint in or out as much as you like:

