Quality Problem

Hello,

For snapshots these photos are fine, but for commercial use, they are not.

Your composition is very average, typical for a snapshot.

So, you have to think about your composition. It is very important as it can make or break a photo.

2nd is your focus. I suspect you were a bit too close to your subject, so the camera couldn't focus properly.

...because these photos were uploaded without editing or manipulation, they are all pure
 from nature and the camera. 

 

By @Vevy365140616kvl

To have photos, straight from the camera' is not always true; it depends on several conditions. 

If you want to get more involved in taking photos for stock, then you need to learn how to edit. Adobe's Lightroom or Lightroom Classic would be a good way to start. 

Lightroom vs. Lightroom Classic | Adobe

Another thing is, don't bother to upload stock flower photos. There are gazillions of them!

These are snapshots at best, and all are in need of editing, particularly sharpening. Compositionally speaking, I would encourage you to look at some of the flower images on Adobe Stock. There are millions of them, so that is your competition in terms of quantity alone, much less quality. ALL photos generally require editing and sometimes manipulation when submitting to stock.

DSC00295.JPG - a bit underexposed and not in sharp focus; DOF is too shallow

DSC00242.JPG - also underexposed and chromatic aberration is evident

DSC00238.JPG - blurry

DSC00112.JPG - not well composed, background too busy

DSC00246.JPG - lacking contrast, not well composed 

Unedited images, straight out of camera are rarely going to be acceptable. Editing is a necessary skill if you want to be successful at stock photography. Additionally, floral images are already over-represented in Adobe Stock. Search in "red rose" and you'll get 4.4 million matches. The chances that anyone will ever see or buy yours are very remote...