You can be alone and not lonely. You can learn to enjoy your own company and be okay with you. It's okay to need other people in your life, but you can't depend on them for your happiness. Relationships are doomed to fail at this point if you don't work on yourself and you could set yourself up for more emotional pain.

People are a little scared of how aggressive you're being I think. I think you're being aggressive because you've resigned yourself to your unhappiness even though you don't want to be unhappy and you're frustrated because you think nothing will fix you. That's just what I see, but I could be wrong.