Retouching multiple photos

Hi.
I have set of 24 photos that make up a 360 videos.
see here : https://spinzam.com/shot/?idx=145007

As you can see from this photo the base is still visible.
I'm not looking for a clean white but I would like it to look more like this and perhaps remove the line of the base
https://spinzam.com/shot/?idx=144992

its really important that the bag colors and lightness is not affected at all. So perhaps someone knows how to automate this procedure. perhaps the background can be slightly lighter.

I have 10 bags so 240 photos. So it not a retouch individual job but maybe someone has a trick,
I would require a test sample.

And we can talk about costs