In reality if you ever are in a situation where CPR is needed (or anything else really serious) you will be calling 000 and they will guide you through what you have to do. I think it's a good idea to do a hands on course if you can so it is something you are more familiar with, but you will usually have support available if you need it (barring occassional events like thunderstorm asthma and covid, anyway).
And that suits me just fine... I can handle most gory scenes in movies, but if it involves eyes, I have to skip it. If the medics and docs are happy to handle it, I am more than happy to leave it to them