Need some advise and some outlook?

So for the past 7 years I have not been in a relationship. I have been trying to find one but I always get left waiting or alone. I have tried dating site after dating site to find someone. I have gone to clubs and bars but honestly a little shy but nothing ever came out of it. I have people that I thought I could call friends but they are never there when I need them or blow me off like I am nothing. Time after time they ignore me or make plans with me and not follow through. Leaving me standing there alone waiting. I really don't know what to do anymore and really depressed about it. I am writing this because I am out of ideas and options of where and what to do next. I have seen great ideas and actions come from this site and thought I would try to see what this community could do for me. So please help if you can? Thank You!