please can u spot the technical issue here i am trying to understand why this img is getting reject

It looks like a great vista, but unfortunately your shadows are underexposed and your colours seemed too saturated.  What is very noticeable is the apparent smudge on your lens right down the middle of your image.

It looks like this photo was taken with your phone.  The challenge with your phone's camera is the very small sensor it uses its own processing to determine what it thinks will make a good photo.  If you look at your photo at 100% magnification, you can see the detail is lost and your trees and mountains have a "painterly" effect on them.  You can also see the smudges down the centre of this photo.

Adobe customers are looking for natural looking (no filters or over saturated colours) clear, well lit photos.

Here are a couple of links that would be worthwhile to review:

• https://helpx.adobe.com/stock/contributor/help/photography-illustrations.html
• https://helpx.adobe.com/stock/contributor/help/reasons-for-content-rejection.html

I hope this helps.