Issues

Great stock photos begin with proper lighting, good composition and knowledge of correct photographic technique. 

Take some photography courses. 

Learn how to use your equipment and how to correct errors in Photoshop or Lightroom.

Before submitting, compare your best work with current Stock inventory to ensure it's as good or better than what Stock is selling.  If customers can't use it for commercial projects, they won't buy it. 

Read your Stock Contributor User Guide for more tips.

• https://helpx.adobe.com/stock/contributor/help/reasons-for-content-rejection.html
• https://helpx.adobe.com/stock/contributor/help/quality-and-technical-issues.html
• https://helpx.adobe.com/stock/contributor/user-guide.html/stock/contributor/help/photography-illustrations.ug.html
• https://helpx.adobe.com/stock/how-to/tips-stock-image-acceptance.html

Good luck.

These appear to be unedited cellphone snapshots, which are rarely going to be of the quality that Adobe requires. Though cellphone cameras can sometimes produce acceptable images under ideal lighting conditions, you did not have ideal conditions here. You'll also have to learn basic editing techniques if you wish to pursue stock photography.

Checking your pictures on my desktop now:

That's an IP violation. You need to edit out the logos.

You need to get better contrasts, correct the lens distortions, check for artefacts like here:

If you have a small sensor camera (like a phone camera) you will have to get perfect light situations, as they tend to have more artefacts when taking pictures in difficult situations.

Hello,

Composition, and exposure are two important issues here.

Follow these links regarding composition and exposure.

• Exposure:
  https://www.adobe.com/creativecloud/photography/discover/exposure-in-photography.html
• Composition:
  https://www.adobe.com/creativecloud/photography/discover/photo-composition.html
  
  
  

You need to lift the shadows and generally you need to work your composition.

You will need to get rid of the upper left branches: 

Looking at the lower part of that first image, I see disturbing geometries: