I'm new to new to creating stock footage, why does it say there are quality problems with these images?

Suggest you read through your Contributor User Guide before submitting more content. Start with the 4-part photography requirements below. 

1. https://helpx.adobe.com/stock/contributor/submit-your-content/submit-photos/photo-submission-overview.html
2. https://helpx.adobe.com/stock/contributor/submit-your-content/submit-photos/technical-legal-requirements-photo-submission.html
3. https://helpx.adobe.com/stock/contributor/submit-your-content/submit-photos/photo-editing-best-practices.html
4. https://helpx.adobe.com/stock/contributor/submit-your-content/submit-photos/submit-photos.html

Also compare your best quality work with similar Stock inventory to see what you’ll be competing with.

• https://stock.adobe.com/search?k=vietnam

Hope that helps.

The shots are great, something is off, if this is the quality you submitted the answer is clear, even DJI Mini 3 shot in raw give sharper results than what you are showing here.

🤷🏻‍♂️

Exposure and focus.

None appear to be sharply focused, and they’re underexposed. It also looks like you’ve applied a vignette which isn’t allowed.

Exposure on the bottom one, lack of sharpness on the top one are at least two issues.