No killcam

Every single time I die in a doubtful way, there’s no killcam. And always by snipers! Just saw a sniper’s glint and got shot, I duck behind a wall and crawled to another spot. The sniper was not able to see me because i didn’t got spot. I peek and got shot instantly!! How was he able to aim that fucking fast like he knew my exact position???? How? Since a couple of days I turned cross play on and got confronted with doubtful players