Hi @P.K.PICTUREWORLD ,
I look at the first 4 and they all seem to have the issues. They are all a little cool, and display grain/noise. It would appear you did some sharpening and introduced artifacts in the process. Over sharp will produce grain, and halo, which are characteristics of all four. Also the colors are not smooth.
Inspect all your files at between 100 and 200% zoomed. Remove all logos, trade marks, and writings. Look around the knee and leg of this man and you will notice a white halo. That need correcting. You need model release from him. The shadow area must be lighted enough to show details. You also need to adjust the highlight. The highlight from the top of this transport has caused detail loss.
This is very grainy and cool.
This too is cool and if you notice close to the wrist the color is not even and also displays a rainbow. That red color on the arm is not natural.
There is not enough depth of field. Part of the flowers is out of focus. This too is too cool.
When inspecting please look for color fringing. Otherwise, your photos are looking nice.
Photographer and Author
Looking at the last of your pictures:
Excessive noise reduction, followed by excessive sharpening...
Looking at your second last picture:
Strange noise in the sky part, colours too saturated, excessive noise reduction and sharpening.
Looking at your third last picture:
This one is the best picture so far (including those taken care by @jacquelingphoto2017), but still:
Washed out colours, incorrect depth of field, the whole structure should be in-focus here, probably oversaturated colours, I thought to see colour noise.
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