people also make a mistake that when they are applying compressions they are doing it so abruptly that they are not giving the chest enough time to bounce back to its orignal state after each compression which is very important bcz at that time diastole is going on and heart is getting perfusion. and if diastole is incomplete heart does not get fully perfused and so u can figure out wot could be the consequences!
Some of the common mistakes when doing CPR include not applying enough pressure while doing the chest compression. Furthermore, Interruptions while carrying out CPR is another common mistake as roughly 100 compression per minute are required.
People think mouth to mouth is better effective than chest pumps. U need to do at least 20-30 chest pumps and only 4-5 breaths for the victim. Also make sure Your fingers are secure and you apply enough pressere hope this help correct me if im mistaken