I don't think there's any magic formula. All my friends ( apart from at school) were made through work and once i'd changed jobs i lost touch. So were they really friends?. Probably not. Certainly the older you get ( i'm 57) and esp if you stay single the harder it is to make friends. I don't have any friends. You don't sound any where near 57; so be nice to people, talk to people, join clubs, be interested in people and you'll just have to see what happens. I like to think i do all those but, as i said, i've ended up with no friends. so i hope you have better luck.