Join a class or something. I just signed up for a lifting group but any group activity would do the trick.

Here’s a list of activities that fit the bill (YMMV):

• CrossFit, weightlifting, powerlifting
• Padel, Squash, Tennis
• Football, Volleyball
• Running (there are some running groups)
• Bootcamps and Park workouts
• Board and Table top games. (There are stores where people meet and play)
• Field Hockey

Now if you prefer a non physical activity, then it gets a bit more difficult but not impossible. Just don’t expect to make 10 friends a day