you didn't find the right people that's it, just keep posting and you will see, people that want you to upvote them back they are spammers that I don't like, asking to follow and upvote them like kids, I converted my group especially for people to resteem each other and I noticed a lot of spammers, I am blocking them usuallly, but there are a lot of people that are normal and they upvote just because they like your post and they don't want any thing back, here is the group that I was talking about with the link inside : Rules of Steemit Group 'Resteem to be Resteemed'. You are welcome to post in it if you want, I think resteems are better than upvotes !