Beginner looking for advice

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

What would improve the work of a photographer of 2 months? Study, experience, peer review. Probably, joining a photo club. In a few years, if you have an aptitude, you might be ready to tackle commercial photography. 

There are many photography tutorials and videos to be found on the internet.

Apply the advice you find there to your photography.

Here is what I see looking at your photos:

Make sure the focus is crisp. The colors and contrast must be correct. Watch the exposre.

Do not shoot into the sun. Straighten lines.