I'm no psychologist or some sort of an expert,so this is just my own life experience:
I grew up with quite a variety of people: some were pure criminals(drugs,roberry, extortion,theft),while others ended up being lawyers, mathematicians, businessman, doctors or civil servants. Some lacked brains while others lacked courage. Ultimately,if you feel lonely,drop FB, Instagram, WhatsApp and other crap.Just fucking delete that crap. There are always people who are interested in the way you think and are absolutely excited to listen and just talk to you till the sun rises... Feeling outspoken and like going to places? Go to those night clubs, restaurants or parties.Feel like being quiet persona in the corner? Well,join like-minded people, play Warhammer, build a train set and so on. Whatever you do,drop that Instagram/Facebook/LinkedIn bullshit,where everyone seems to be conquering the world.Just drop it. Go to the bloody library,local reading club, whatever. Also,learn how to listen. Actually hear what people are saying,how they feel. All this stuff turns into conversations, follow-up meetings and ultimately friendship or something more. there's plenty of space for everyone, despite of looks, character or anything else. It's not as hard as you make it!