Is there a way or an application on mac os that would allow me to display on only a part of the screen and fill the rest of screen with black bars?

I am using LG 55inch OLED 4K TV as an external monitor.
On windows I used to set a lower resolution and use center scaling in order to prevent display to be stretched to fit screen. So I end up with black bars filling the rest of TV screen.

I hope I can do the same on mac.