Webpage opening as https and geting error message

I have multiple webpages, the main page is index.html, and I have several others, page2.html, page3.html etc as an example.. However one of my other pages, say page2.html, when it comes up on google search, attempts to open up as https instead of http, causing an error. It is just an informational page so it does not require https or an ssl certificate.

How do I set it so that from the google search the page only attempts to open as http?

My main index.html page, from google search, opens as http as it should, and the other pages to my knowledge are configured the same?

Thanks!