Die from 2 shots non headshots

I've been dieing rather weirdly the last few weeks but its been bad this morning I have a good ping but the clock and ping error keeps popping up in the top left but the problem i have is ive been getting alot of headshots on people and they just hit me in the leg or chest a couple times and im dead in less than a second I know im not great but im a decent shot im a lvl 400 plus so ive played many hours and that's without the double up boosters ive saved all them so I know what im talking about somethings wrong the orange dots all gone except for the vz pistol and the cz sub machine gun and uve also had a problem with the grenade intercept not intercepting grenades for some reason its gets me killed a bit when I have 2 set up and a someone kills me with a grenade launcher at hagental base