Would very much appreciate your feedback on one rejected photo

Zoom in and look at the clouds which are quite noisy.

Keep it for personal use. 

There is enormous competition from other sunsets in Stock. Don't be discouraged if it's rejected for "Similar Content."

https://stock.adobe.com/search/images?k=sunset 24.6 MILLION results

https://stock.adobe.com/search/images?k=evening+sunset 8.4 MILLION results.

https://stock.adobe.com/search/images?k=sunrise 38.1 MILLION results

Read your 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/how-to-submit-distinct-content.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

Underexposed overall and your shadows need to be opened up to detail and your highlights reduced a bit.

Hello,

Apart from it being somewhat dark, you could improve the composition quite a bit.

Remove the distracting trees and crop to a different format.

For example:

Just an idea!

PS - there are tons of sunset images in the database!

It could just be that it's one more sunset photo, also it's overall dark and a bit soft*

My best advice is to encourage you to learn lightroom and photoshop, specially the features in camera raw... with a bit of love you will improve your photos immensely.

On another more basic point, I took a close look at your photo info. You shot this at 1/800 f6.3

were trying to have shallow depth of field on the foreground?

*The biggest most usual mistakes (even pro's) I see is not using a tripod, specailly if you are going to shoot landscapes at dusk. Look for smaller f stops, and always use the shutter timer.

Btw, Adobestock has a very annoying thing with shallows depth of field and will use that to rejects photos that should never be rejected... and that's something that we have to accept...

The highlighted triangle on the left side of the histogram indicates shadow clipping. 
The areas in blue indicate where all details are lost due to the clipping. 

Clipping is almost always rejected.

Hi,

the Picture is overall to dark in my opinion.

Check the documentation.
If you are new to stock, you should consider these resources: https://helpx.adobe.com/stock/contributor/tutorials.html 

Please read the contributor user manual for more information on Adobe stock contributions:
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See here for rejection reasons: https://helpx.adobe.com/stock/contributor/help/reasons-for-content-rejection.html 

And especially quality and technical issues: https://helpx.adobe.com/stock/contributor/help/quality-and-technical-issues.html