for a certain definition of aggression. but social media bullying is a Mean Girls phenomenon. it's reputation and character assassination, which is aggressive behavior. male aggression tends to be physical and they spend more time playing video games, while females spend more time on social media. as a result, girls are seeing higher rates of depression compared to boys.
here's the research on this topic that Jonathan Haidt and other academics are maintaining;
https://docs.google.com/document/d/1w-HOfseF2wF9YIpXwUUtP65-...