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Nothing seems to be in focus in the first photo. In the second and third photos the focus area is too small. Here you can find out more about the technical requirements: https://helpx.adobe.com/stock/contributor/user-guide.html/stock/contributor/help/quality- and-techni...
The explanations are here, and 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
Pictures, when refused, get a refusal basic reason (very often "technical issues") as a hint where to look. You need, however, to examine your pictures yourself or post here, for others to analyse.
In your case, it is certainly that the plane of focus does not cover a larger area and/or has been poorly placed.