Hi. First and foremost, 5 posts a day on Facebook is too many. You lower your reach by posting that frequently, which undermines the effort. Also, if you are posting that often, people are likely to remove you from their newsfeed or 'unlike' your page.
It would be better to post a maximum of 3 times per day, and allow your reach to go farther, thereby creating more impression for your brand and provoking engagement with your posts.
I can effectively run this page for you.