Whether your dog is friendly, aggressive, or reactive, you are responsible for your dog and it should be under your control at all times. If that means you keep them on a lead, so be it. If your dog ignores your recall command, I don’t think they meet the definition of ‘controlled’ and maybe they shouldn’t be allowed to roam free.
Next to soccer, I’ll wager basketball is the most popular game in the world. Kids can play it anywhere. You don’t need a massive field and expensive equipment. You can put up two hoops in a vacant lot and bring out a neighborhood for a skills competition. The game has been adopted in Asia. Kim Jong Un is a huge basketball fan. It’s a game popular on every continent save Antarctica, where it’