One page where you can’t navigate between images

sorry, but I don’t understand what You want

The page I linked to has a series of links that lead to other galleries – on that linked page I have 3 images (New Dwelling – 2-Story, Westland Fertiliser and Toals Bookmakers) then when clicked, I don’t want to connect to each other – instead I’d like them to load separately without letting users swipe between them.

Disable – Combine all single WP Images (from the Post / Page) to display in the lightbox. on lightbox Settings for this page.

https://monosnap.com/file/eG8g2Hlwg3tt1DPhqFE5bVEQa0VIEx

Is there a way to do this in the classic editor?

I found that Gutenberg messed up how I arranged my code and was duplicating lines unnecessarily.

What does Gutenberg have to do with this?
You need the Block Editor, which has been the basis of WordPress since version 5.0. But I understand that you are using the Classic Editor (plugin) and thus we are at a dead end. Since the Classic editor is an absolutely dead-end branch of development for people with outdated themes.
I’m sorry for your wasted time, but under the classic editor my plugin does not work to its fullest.

OK, I understand.