Photos rejected for quality issues

Hello,

They look like they were taken from a smartphone. Unfortunately, for stock purposes, generally speaking, they miss out on the quality standards. Your photos lack some sharpness, are a bit oversaturated, and the exposure isn't so good either. For stock photos, you need a fairly decent camera, take care about composition and have in mind how the image could be used commercially.

Have a read of this from Adobe about how to create better photos:
https://helpx.adobe.com/stock/how-to/tips-stock-image-acceptance.html?set=stock--fundamentals--adobe-stock-contributor

I didn't look at all of them.  But the reasons are much the same as in your other post. 

Blur/focus, motion, uneven exposure.