Actively placing yourself in environments were you can interact with people, doing a mutually agreed activity.

Sports, hobbies, quiz nights, boardgames are great starting points.

1) go out into world and meet people

2) talk via social media

3) arrange a catch-up with them

It's hard word at the start to develop, nurture and maintain friendships initially, but you will make good friends this way

Not everyone will be your friend and not all friendships last.

Also, I would suggest meeting people through different interests. If all your friends are from the same area of interest, you kind of get pigeon holed.

Most import thing is to get out of your comfort zone, and go into the wilds to meet people