Why does it feel like the world is against me?

It's like no matter what I do there's always something out there that is trying to hold me back. I am trying to study for a test but people kept interrupting me, I am trying to download something but the computer slowed down for no reason, I am trying to find a job but nobody would hire me, I am trying to make friends but it seems like they're all ignoring me, I am TRYING to find a girlfriend but get rejected EVERY time! It's like everyone hates me, or at least it feels like it. I've noticed when ever I'm nice to others, bad stuff started happening to me. But when I was mean to others, good things started happening to me which I thought was weird. How come it's like always the opposite? Is life trying to f*kc with me?