Firefly does not take in the account reference picture!

I used to take the view of the products we sell in our marketplace store in the shooting tent, showing a reference photo in Adobe Firefly and capturing images in the desired ambiance, depending on the structure and prompts I wrote. And then I put the real product photo instead of the Firefly's view. I cannot benefit from the visual processing feature by taking the outline and depth of the reference photo exactly, which is why I use Adobe Firefly. Unfortunately, I could not find a solution no matter what I did.

I shared some images about this. I hope you will understand what I mean much better by looking at the results. (2 ss from 2 different web browsers and the product photo) 

Hope to solve this problem, thank you everyone!