I spent a few weeks at a hostel last year. It was always kind of depressing and tense in the shared kitchen, just this heavy silence.
I don't feel comfortable around strangers, so I solved that problem by just saying hi to everyone.
Most people didn't respond much, although most of them smiled and the tension was eased. But a few of them struck up conversation and we ended up making friends.
I ended up making like, ten new friends in two weeks. And then a bunch of them ended up becoming friends with each other as well.