I don't think you understand SEO very well. The days of repeating the same keyword over and over again disappeared around 2011 with the advent of the Google Panda algorithm.

Since then, the algorithm checks in another way that you haven't strung words together, and that way ties in with good writing habits.

For instance, one of the factors in good writing is that one doesn't use the same word continually. One uses similar words and related words. That's what the Google algorithm looks for. In short, if you want to get to the top of Google, you have to be a good writer.