Product promotion sales assistant

Hello!

I have several products to promote through a link, and I need someone to post this link in forums, blog posts, Facebook groups... For example if the product is related to weight loss, I want to post it in the maximum amount of weight loss Facebook groups, forums, blog posts...
I want to be done in this way: the message will be sent in the groups for example, "Hi, I tried this product and it really worked for me, I recommend you to try it here's the link."
So basically I want it to be very natural and not just for the purpose of selling it, in a creative way.
Moreover, other methods of promoting my products can be used.
I wanted to know if someone can fulfill this job so we can work together and help me generate sales.
Nicolas T.