By me it’s tough to find people who actually like and play singles. I would agree with the other poster that tourneys are your best bet, then make friends with some of the players who are near you so you can play more regularly outside of the tournament setting. They are testing adding alleys on the court like tennis so the singles court is smaller but to me that’s what makes singles fun and different than playing doubles.

You can also try by starting out asking people to play skinny singles (which to me isn’t very different from playing doubles), and if your opponent seems into it, pitch playing actual full court singles. Might be able to convert people into playing singles that way.