Can’t I edit the photos in a new section I created?

Maybe you didn’t understand me well, where you told me that he added images it was in single product layout if I select photos there it remains displayed in all the products I can’t modify them and I will add an image gallery for each product. I will send you a video to explain my problem. I’m waiting for your answer, thank you

https://youtu.be/wTxFILVb8m8

This is what I wanted to say, I want to add a new section to add an image gallery, outside the description area, more precisely below.
*I will send you a picture to better explain.
I want to add a gallery of images in -area 1-, and the description area and in -area 2-, and it is not for a specific product, but rather for all products.
So in conditions I selected all the products. All this and in “single Product layout”. And that I go to “product” to modify my product. I can’t access the section I created, image gallery I can just modify the “product description”. On the other hand, for the image gallery, I can’t modify it, it’s like for the “product Specification”, or the product header, and I want to modify the “image gallery” because, each product has its own images as in the description. Each product has its own description. I hope you have a solution for this problem.