articles ranking

Is it better to write a product review as the 1st person? How many times should the main keyword and how many LSI keywords should be in a 1000 word article.Also, any recommendations for services that do quality articles within 24hrs... I tried BHW and most are 2-4 days. Thanks

I have a new website about 4 months old. I have 0 backlinks other than a Facebook page I created for the site. I have written 20 articles, and I have paid for 20 articles. So I have 40 articles total. The articles that I paid for, I checked all of them for plagiarism, and all were 100%...