rejection of photos

Adobe stock is not a photo school to inexperienced photographers. If you participate in stock you need to send in perfect or near to perfect assets. Adobe pays moderators for doing the vetting, and they are excellent at it, but they have very little time to spend on each asset. So, refusal is at the first defect they see and that will be the reason you get. If you want to know what is wrong with your pictures, you can post them here and we (contributors) will analyse them and give hints on what may be wrong. However, if you post more than 3 pictures in a row, don't expect to get an answer for all of your pictures.

I've looked into 9872 and in addition to some colour grading that could be used to enhance the usability of the picture, you have a fundamental problem with that one that you need to catch before submitting:

Looking at 200% into your image, you see that you have a kind of ghost image. I also do not find a focus point where I could say that's where the focus system was aimed at. And finally, I saw a kind of dust/droplet on the picture, probably coming from the lens or bad editing:

Your pictures are nice when looked at them in small on the screen, but you really need to be critical on the quality and examine your pictures at 100% and 200% or sometimes even more.

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: https://helpx.adobe.com/stock/contributor/user-guide.html
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