What has more influence on shootings Bullying or Video Games

People say that Video Games are the main cause of shooting but with a little research it shows that bullying is a main factor of shootings not video games. Some people say that if you play a certain amount of time of games for so long you will be encouraged to do a shooting. A person goes on about how Video games these days are violent and are brainwashing the youth of today. I am an 18 year old teen in high school and I play video games and i have friends and i haven't shot up a school I believe that it is bullying that causes shootings because i have been bullied since elementary school. All in all video games are more educational than influencing people to kill.