Look at your pictures at 100% magnification. All of them have a horrible amount of artefacts, are out of focus etc. Ask yourself: would you pay money for buying such pictures?
This is only one of your pictures viewed at 100%:

This should be crisp sharp but in addition this particular image ( PAISAGEM SERRA BR020 2E.jpg) is missing contrast and is overexposed.
You want an other example: O CÃO.jpg : the dog is badly out of focus. In addition there is oversaturation and a problem with the white balance.

All of your images are clear and easy refusals.
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
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