Help in 2d platform script

hello every one ,

Now i finished my 2d game but when i set up it in my mobile it become like this so i change some scripts

in Maincamera but it still the same

how can i change the sceen to become horizontal in my mobile like this

what i need that how can i make it fit my mobile screen

thanks,

Go to Player Settings → Under “Resolution and Presentation” change the Orientation to Landscape.