Getting it off my chest

TRIGGER WARNING Here I'm telling you about watching a video that still scares me(violence)

Ok so recently I was on this app that I use to talk to my friends. You can also join group chats on this app. I was in one called music lovers or something. It was pretty chill with people sharing music and stuff. So here is when it gets bad. I glanced at the chat and saw that someone posted a video. I went to watch it without even thinking. There were these guys like maybe... Idek where. And they just went up to another guy and shot him. And then that's it. After a few moments the vid was taken down. I should've just waited. I keep thinking about it and can't stop. I keep trying to tell myself it wasn't real it was just a skit but it looked like something strait from the deep web. I felt fine watching that stuff in movies but...... This was sickening. I still feel pretty gross and bleh. And I'm only 13 so I hope I forget about it by the time I'm older. Well yeah that's it.