Can anyone help me on the quality issues of my Pictures?

Whatever stylistic choices you take, Adobe (and I suppose most of the buyers) would call that quality issues. Sorry, but you should read the guidelines and stay with them, if you are eager to work with stock.

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 fallow them by the letter: https://community.adobe.com/t5/stock-contributors-discussions/generative-ai-submission-guidelines/td-p/13549435

Yes, it's a stylistic choice, but Adobe expects at least something to be in focus, which is not the case in the first few images. You've also cropped too close on most of these, cutting off parts of the flowers. While photographing and editing floral images can be fun and good skills practice, don't even bother uploading to Adobe Stock. There are already many millions of flowers in the database and the chances that yours would ever get noticed or sold are exceedingly slim.