Hello, @Mavi Ekran,
Actually, our theme supports two types of product pages.
1. Pre-build in this you can enable/disable some options.
2. Custom layout in this you are able to create the layout and set the content as per your need.
You can be able to choose the most suitable for your single product gallery layout on desktop only in Theme Options.
I have made a video for you kindly watch the video for a better reference: https://www.veed.io/view/9de20fe6-09e5-466b-8b72-8405e7e4357f?sharingWidget=true
Here is the detailed documentation on these layouts: https://xstore.helpscoutdocs.com/article/68-single-product-page
But please note that there is no such option in our theme for changing/setting it separately on the mobile version, so this requires extra Customization for now.
OR
You can submit a request here – https://www.8theme.com/taskboard/
Regards 8Themes Team.