I know some Indians and Pakistani who play pickleball.

I know rather more Indians who play cricket. I think you have to have critical mass to get a cricket team going though... Not everywhere has enough interest.

Socializing with "in groups" like Indians getting to know Indians is not what I was referring to in my original comment.

I was talking about socializing outside of "in groups" which is what I found challenging.

The nice thing about pickleball is that it's often drop in play, so you can show up whenever is convenient for you and play with random people. This is indeed a light social interaction, but the people who regular eventually get to know each other. Where I live there is a strong pickleball community.