Long article littered with repetitive phrases

I have written a couple of long articles and the first thing that is noticable is that under different headings I found the same phrases being repeated. And in some cases the same sentence is repeated more than once, I had to carefully go through each article changing or removing several pieces that just made the article appear amateurish or AI generated. The Article Engine is not yet at the stage where I would give up my current AI content generation tool in favour of Next Level Marketing.