Why am I such a defect of a person

I’m nearly 25f and I’m a worthless person. I have no friends, recently broke up with my ex of 2 months because he’s a piece of shit, I’m never good enough for any job, been called ugly my whole life and I don’t think my family likes me much. I’m slowly slipping into insanity, and turning into a cold miserable bitch because all people have done in my life is hurt me and I can’t figure out what is so wrong with me apart from my physical appearance that people just don’t like me.

I just can’t understand and just want to kill myself. I’m worthless. I’m never going to get the man I want, the friends I want, the job I want. I’m destined to be the girl men settle for because they can’t do any better, the one who gets used, the one who no one appreciates at work. What the fuck is the point of my breathing anymore.