The below link explains a bit more:
https://www.google.co.uk/amp/s/www.hongkiat.com/blog/wordpress-attachment-pages/amp/

The below link explains how to overcome:
https://woorkup.com/stop-google-indexing-wordpress-image-attachment-page/

Please advise if I’ve misunderstood.

First off, BEAUTIFUL pictures! Ok, so I tried to recreate your search findings and was not able to find the offending link, https://tessilamcleanphotography.blackcoffeeranch.com/country-sunset-4

In either Google Search, or a DuckDuckGo search, and so I tried different combinations of words to try and get the offending result and did not have any luck.

My thought for why it exists is that the page refers to a site within your website that has not been formatted to not allow discussion, to test this theory I would go through each of my images in the media library and try to find the sunset picture’s particular website.

I would also recommend investing in the Akismet Anti-spam filter to help filter out the spam comments you are getting.

Hope this helps!
Marcus

Thanks a lot, @marcustheraj! I appreciate it.
What I searched in Google was “Tessila McLean Photography”, and a lot of different links from my website showed up at the top, but one of them was the foreign link that I talked about. But now the situation is resolved.
I do have the Akismet Anti-spam filter on my website, and I was able to see the comments and mark them as spam before the public could see them.

Thanks to both of you for helping me out!
~Tessila

glad it worked.

P.S. the site does have some amazing imagery!