Magento Product Detail Site structure change

I would like to have the product details page redesigned.
I use Magento 2 and the Porto theme:
https://www.portotheme.com/wordpress/porto_landing/

The page currently looks like this:
https://www.portotheme.com/wordpress/porto/shop35-soft/product/product-short-name-4/

I want the page to look like this:
https://www.vitafy.de/yippie-bar-12x45g-banana-split.html

Since I don't know what theme this website uses, I would like to change it accordingly. Who can tell me what theme it is or redesign the product detail site for me?

I'll also pay if you tell me which theme is used there