Quality problems. Please explain!

Hello,

Photography requires a great deal of thought to capture a good photo. Not only lighting, exposure, and the right type of aperture for the shot, but also composition.

Read about composition and exposure in these links.

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

Stock is a global business for professional content creators to source commercial quality images, graphics & videos. 

Customers are expecting the highest visual & technical quality photos, suitable for use on product labels, billboards, magazines and TV commercials. 

Before you submit more content, compare your very best images against similar content in Stock's current inventory. 

1) does Stock need more of this? 

2) is yours better than what they have now?

3) as a customer, would you buy it, and what would you use it for? 

https://stock.adobe.com/search?k=pink+rose over 6 MILLION results

https://stock.adobe.com/search?k=ducks+water 1 MILLION results

https://stock.adobe.com/search?k=tall+green+beverage 45K results

Hope that helps.

I see exposure, focus, composition and Intelectual Property  problems.

You really need to improve your photography skills. 
Adobe offers videos and material to help.
contributor-handbook-2022.pdf

Get Started with Adobe Stock