My kids both played soccer as youths. I played as an adult. I would let them again. Probably lacrosse too. Even baseball but it ended for son quickly - first at bat in kid pitch, right in the face. Every other at bat he was far off the plate.
Would I let my son play football ?
Nope.
Yet my daughter, helmet and all, got a concussion her first time skiing. Scary as heck btw.
My son has been ok but mountain bikes and I know lots of people who have been injured. Rodney Rogers, for former Wake and NBA hoops player, got paralyzed from a motor bike and just passed.
It’s unpredictable but football players seem broken when they get old.
But in general, I’d want them to play anything but football. My son did play flag.