Thank you all for the tips and information! It is super valuable to me both in adobe stock and as a photographer

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

If you are a generative AI contributor, please look into these instructions and follow them by the letter: https://community.adobe.com/t5/stock-contributors-discussions/generative-ai-submission-guidelines/td-p/13549435

4 U.S. Code § 8

(i) The American flag should never be used for advertising purposes in any manner whatsoever.

https://www.law.cornell.edu/uscode/text/4/8

Quality issues aside, whatever you submit to Stock is for use in commercial projects.  Therefore the flag disqualifies it.  Sorry.

Greetings!  This appears to be a thumbnail sized image, so it'll be tough to check for things like sharpness, noise, and artefacts.  For the best advice, post the same sized photo you sent to Adobe.

The histogram shows the blacks of the photo is missing information, and the contrast looks a bit faded to me.  Adjusting the black point may fix the contrast, or further exposure correction may be needed.  This is assuming this is able to be fixed.  The sun flares takes away from the composition in my opinion.

The histogram should have info from edge to edge, black to white.

This wouldn't be a Quality Issue, but the American Flag may be Intellectual Property and need a release.  

Good luck with future submissions 🙂