Although Fiverr and Hirewriter will create your content, that is no guarantee that it is original content as a friend of mine found out. - the hard way.
What I do (and I don't know if this is ethical or not, but I do it anyway) is do a search for the content that I'm looking for. Then copy and past this content from 5 or so websites into microsoft words (office) then start rearranging the content so it makes sense and is smooth reading. And whenever I can, I will add or remove some sentences to make a good reading article.
In my opinion, this final article is original by me as it is not an article from one person or website. It's like going to the Library to do research on an report that is an assignment when you were in high school. - or anywhere!
Note - if I feel the article is to much from one person, I will give that person credit and make reference to him or site if I can. But I always make sure the reference is opened in a new window, so my visitor does not leave my site.