Hello. I'm a beginner, so please explain why these photo were rejected?

Hello,

There is another point to also consider, besides technical issues/quality. What are you showing? What is this picture of? How can this be used commercially?

You have to ask questions like this. You want people to buy your images. Why would this sell?

In addition to what the others said: It lacks sharpness.

The subjects are too small. There is too much foreground. The horizon is slanted.

You should always tell us the refusal reason. My guess is technical issues.

The histogram reveals that the photo is underexposed:

The whites are missing.

I also think that the horizon is leaning to the right (rotate counter clock).

I suppose that you have model releases for the man and the child. If not, they need absolutely to agree that their picture is used.

The logos on the clothing are not distinguishable, so that's OK. But best would have been to make the two people the main subject, and then you would have needed to edit the logos out.

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

Hello,

I would assume that the Subjects are to small in the Picture and that there is to much going on in the Picture.

In general ... Before you submit, please review the submission guidelines carefully and compare your work with other Stock inventory.

https://helpx.adobe.com/stock/contributor/help/reasons-for-content-rejection.html
https://helpx.adobe.com/stock/contributor/help/quality-and-technical-issues.html
https://helpx.adobe.com/stock/contributor/user-guide.html/stock/contributor/help/photography-illustr...
https://helpx.adobe.com/stock/how-to/tips-stock-image-acceptance.html

Hope that helps.