Please do not say CPR does not save lives, it 100% does. And in the United States our Good Samaritan laws protect anyone from liability if they are acting in good faith trying to help someone.
I’m a paramedic in the United States, hold a certification as a flight medic, nothing I can bring, in a helicopter or an ambulance will do anything for anyone if high quality CPR isn’t performed.
To break things down, yes in adults early defibrillation does make a huge difference but in kids it is literally high quality CPR that saves them. If you’d like I’d be happy to break down the details of resuscitation, but without CPR until I can get there and attempt resuscitation, then no matter how much I throw at someone to try to get their heart beating again, they’ll still be brain dead.