Yeah, I've felt this a bit too, being that I'm also fairly new to posting on the site. But I've noticed that the more you post, the more people engage you. I think it just takes time - a lot of the people who have a lot of friends on here have been on the site for a long time.
Every now and then I'll randomly strike up a private conversation with someone who seems interesting to me, or that I might want to get to know better. The results have been mixed (some people are responsive, some not as much), but it's definitely one way to get people acquainted with you.
Hang in there and keep trying