The 51st result is the outlier. It is the last word on the subject, the final gasp of relevance before the search engine gives up entirely. Often, this result is the most unique. It might be a foreign language translation, a broken link, or a radical opinion that algorithms deem "low authority" but which holds the exact nugget of truth the searcher needed.
If you want your webpage to be among the for a competitive keyword, you need a targeted approach. Let’s assume the keyword is your "Xxx". Here are proven tactics: Xxx Search Results 1 - 10 of 51