Is it weird to go out alone on a Friday night?

Depends on what sort of person you are. Me personally I'd never do it alone but no shit some of the most hilarious people I've ever met have been random tag alongs on nights out. If you can approach randoms and chat shit/make people laugh then go for it. If you won't speak to people out of the blue/ need introducing/self-conscious it may not be the best. Either way what do you have to lose? Could meet someone who could change your life. I went to a rave 15 years ago met some random dude who was on his own outside having a cig. Had no real work prospects at the time, no plans for life, just worked miñ wage jobs and got fucked up on class A Friday till Sunday The dude ended up teaching me a trade, I sorted myself out a bit, started making good money, bought a house and ended up with a 50/50 split on his business.