My dad could still be alive, but he's not

I’m so sad to see this. For anyone who reads this, get a day, learn CPR, and buy that machine if your parents or whoever has history of heart issues. The machine doesn’t fix every kind of heart diseases but the trainer told me it decreases the possibility of death from a heart attack greatly. I recall that the possibility is lowered by 50% if you do CPR and 80% with the machine.

It is not hard to use the machine as it has clear instructions. They probably expect you to still be able to read when in panic.