As for the second part the fact that you are masturbating does not effect the death of another person or can cause them any harm all that happens to us is from Allah and not by your actions.
مرسىىىىىىىىىىىىىىىىىىىىىى ىىىىىىىىىىىىىىىىىىىىىىىىى ىىىىىىىىىىىىىىىىىىىىىىىىى ىىىىىىىىىىىىىىىىىىىىىىىىى ىىى