Hey just read your question:) I've been in the social media marketing biz for a decade now. Tried multiple sm services. Was deceived, scammed and robbed(after all who didn't?) before I came across with a worthy one(the link is below for you to try).

Just a few things you need to remember before opting for a paid promotion:
-make sure your blog has a GREAT content(have no idea why so many people post shitty content?);
-make sure you are posting consistently (once in a while doesn't work);
-be ready for not having any traffic whatsoever within a first month or so;
-connect with social media networks; Fb groups, Quora, Yahoo answers, etc. (you won't believe how much traffic you are to gain through your blogs' social media accounts)

Here's the promissed link https://feedpixel.com/
Good Luck!