Slider Problem on mobile version

Hello, I am having a problem with my first section BG for my site. I have set the slider with image background , size cover and position left50% top50%. When I preview on both inspect and mobile, the image cropped. Anyone know how to fix it ?

here is the preview for my site.

You have only one image in your slider.

@Moheen Yes, I will add more later. So is there any chance that you know how to fix it?