Hackers or just really good

Im put the link to the video i captured on my ps5 but someone tell me how he knew I was there and why when i shot my emotes popped up?

Okay why was i killed?

Because of that God awful gun skin, God, do rust players have no sense of fashion?

You made some noise on your way to him, kind of alerting him. I would of investigated the noise as well.

It also looks like a console you press one button and that menu pops up, he started you and you openned menu?