Sorting by the least viewed/visited sites wouldn’t necessarily help in finding anything relevant to your search, and would just be topped out with placeholders, ad spam and generative garbage that isn’t useful to anyone, which would explain why they aren’t visited more in the first place.
If your search engine of choice still works properly, you can find more specifics or niche things by putting very specific phrases in quotations.
“People on horseback”
would give more specific results than just:
People on horseback
You can narrow it down with other modifiers like + for and and - to filter out results that have the following keyword.
“People on horseback” +fields -flowers
There usually is a page somewhere within the search engine that explains all the modifiers you can use. There are a lot more than what I’ve given here.