[AlbertCory]

I'm sorry, you're totally wrong. I walk past some basketball courts every day, and there are always games going on. At the middle school, the kids play volleyball, and also spike ball:

https://www.wikihow.com/Play-Spikeball

I also occasionally see pickup touch football games, and of course soccer. Baseball: maybe you're right, only adults play that anymore.

And let's not forget pickleball. Contrary to the stereotype of its being an elderly sport, go look at a court sometime: people of all ages play it.