These pictures are rejected, can you please let me know the reasons

You have some formidable competition in the "ocean sunset" category.

https://stock.adobe.com/search?k="ocean+sunset"

Before you submit, compare your best work with similar content in Stock's inventory.  Ask yourself these questions:

1. Does Stock need this, or do they have millions of this already?

2. Is mine better than what Stock has now?

3. As a customer, would I buy this?

4. What would I use it for commercially? 

This isn't the same as social media.  Adobe Stock customers expect the highest visual and technical quality for use in commercial projects -- print, digital & merchandise. Read your Contributor User Guide carefully.

• 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
• Model/Property Releases:
  https://helpx.adobe.com/stock/contributor/help/model-release.html
  https://helpx.adobe.com/stock/contributor/help/property-release.html
  
  

If you're new to photography in general, enroll in some courses.  

Search Google for Smartphone or Mobile Photography courses online.

Good luck.

KK rise-1-4.jpg - blurry, underexposed, noisy. Cell phones can capture images that are acceptable for Adobe Stock under ideal lighting conditions, but this wasn't one of those conditions. Additionally, virtually all images require at least minimal editing before submission, and it doesn't appear that you've edited any of these.

Phone images are not good if the light conditions are difficult. KK rise 1-3 is underexposed as shown in the histogram:

The whites are missing. But even if you would correct the exposure, you would still earn a refusal for quality issues, as detail is missing because of the small phone sensor. Most detail gets optimized away from the noise reduction system.

If you correct the exposure, lift the shadows, you would also amplify the artefacts in the picture.

Adobe did give you a reason, and you should publish that reason with your question. The header of the refusal is enough.

Exposure in this one. And your horizon line is smack in the middle. I'd like to see more of the foreground and less of the sky, or possibly vice versa.