25 year old guy, not in a relationship, what's wrong with me?

Look, everyone's gonna have hard times in relationships. You're not the worse so put your head up and live life to the fullest. You're only 25, even an 80 year old an still find love so you can. So please, you got one chance to live so live it good. And besides, if she's not interested her loss. There are millions of fishes in the sea. And one day you'll find one. Keep your eyes and ears open. Focus on today, live for today. Good luck and best wishes to you!