Good advice from Jo and PDM, Joe.
When people are not wanting the friendship level you desire, it is indeed a message of sorts. Either your expectations are too high and make people uncomfortable, or you, yourself, offend people.
The fact-finding (if a friend or acquaintance will do that for you) is a good idea. Be prepared to think upon the things you discover, however, and begin to take small steps to change.
You won't need to change who you are - inside, but you may need to change how you interact with people, and how you treat people.
And maybe - just maybe - how you treat people reflects how you think about yourself.
That is why counseling may be appropriate. And the counselor may want to suggest group dynamics, such as role playing. In role playing, you can have feedback about what your message to others actually is interpreted to be. You, like many others, may be quite surprised.
Now, to be blunt, you can complain about others not doing right by you, or you can take some of the excellent suggestions here.
