I am suffering from mental problem.

I am 29 years old, I work for an IT company and staying with my family in Bangalore. I am going through mental problem, I am not feeling like talking to anyone inside family. May be my family has not given me complete freedom to live my life. I'm unmarried, I didn't get a right match for marriage and lots of rejection on the other hand. I don't have any female companion either. My family members somehow never encouraged me to go outside travel and mingling with people. I am not sure what's the problem. I am not sure what exactly is my problem. I sometimes feel like going abroad and living alone there, sometimes I feel I should stay alone in Bangalore. I am really depressed in life, I am not getting any idea. Please help