How to make view relative to screen size?

Good day, guys.

I'm having trouble with rendering my game in different screen sizes.

What I'm after is like this.

I want the view to be compressed or relative (if that's the term) to the screen size. But what's happening in mine is like this.

Which looks like the camera is zooming that results to some objects not seen in the game view. How can I achieve the view relative to the screen size? Should I scale the objects based on screen size? Is there another way around? Thanks in advance for any help. :)