I'm not going to help an injured kid
Why wouldn't you help an injured kid?
I don't help people for free.
You should be paid for work. But if someone's hurt it's a need and capitalism shouldn't come into it. You'll need help one day and someone might do the same to you.
I'm not worried about that. I'm just worried someone will try to sue me.
It is good to be on the safe side but you can also help by calling an ambulance. No one expects you to touch the injured kid if you don't know what you're doing.