It's very simple be "FRIENDLY".
Hahaha, yes you are right. Just play online games, join a community, and you need to be brave to smile and laugh. Just talk what you want to talk. Never talk about something that you don't like or something that you know nothing about.
I make a lot of friends from online games because they are so fun and I decided to meet them in real life. And now, they become my closest friends. In school, I get bullied and mock everytime because I am from poor family and I don't have a life like they did. But I always smile and laugh when I get mocked and bullied so they get tired and laugh with me. They become my friends not because I am a great person or a kind person. They become my friends because I laugh and smile even though I get mocked.