First you: please tell us about the rejection reasons! Technical issues would be my guess, and for cause:
0158: Very little is in focus, OK, that can be the intended view. But the highlights show chromatic aberration, and the fact that these little highlights are like stars spread on the cakes show me, that you had an unflattering direct flash. And indeed, too less of the cakes are in focus. The picture is unusable…
0229: If your intention was to put a tiny part of the leaves in focus you've done an impressive job, but as a food photography, I would expect more of the plate to be in focus. Indeed, I see the same highlights as in the prior picture, but in addition, I see some noise.
If you want to contribute to stock, you need to strengthen your skills. Before submitting, have a critical look at the picture. Why would you buy it? And then examine the picture at 100% and 200% for artefacts. If at 100% the picture is not in focus and at 200% you see defects, don't submit.
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