How do i increase the rate of approval of my articles?

[markanthonyfcb]

Hi guys, i have written/write a lot of articles on a daily basis but only few have approved.

Note:

I follow the rules of the site
I check for grammar errors
Post relevant content
No marketing (only one back link for my site)
Plagiarism: i also write from scratch every time and avoid duplicate content

Please let me know what im doing wrong or what i am not doing, THANKS..!