I can’t get a girlfriend or any girl to like me. Is there something wrong with me?

I would consider myself a laid-back, cool and easy going person who is easy to talk to and get along with me. I’m jovial and jokey around people I’m comfortable with, however I am also rather sensitive and brooding. I’ve also noticed that around women I’m a lot more quiet and guarded because I find it hard to get close to them and I always think they are out to get me. I don’t know what to do or if something is wrong with me. What do you think I should do?
I can’t get a girlfriend or any girl to like me. Is there something wrong with me?
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