I have an ultra wide monitor, and it looks ridiculous with the bottom 3d view, but I can't find a way to put it on the right side.

I can make it a new window, but it does allow to resize, so I can't attach to the right side of the screen.

https://imgur.com/a/4Y7w84d

With your options I get a totally dark picture with only a few light sources.

Put a grey texture for both land and sky.
Installed what you suggested.

https://i.imgur.com/hgCBX6R.png
https://i.imgur.com/KAucyIL.png

I want to take a picture something like this:
https://i.redd.it/txft0vz5tlf01.jpg

Can I do it with sweet home 3D (light with no dark shadows)? My main problem are the walls, no matter what time/day I set the walls has pretty dark shadows, and I can't set the sun 90° above the apartment.
I want to ...