when you shoot and your gun points away from the center of the screen.
so Uhmmm, I'm not great in aiming nor a skilled player, but one important thing I have learned from spending many hours of my life is Recoil. When professional cs player or good player aim frag from close range and kills 3-5 and long range head shots, I am always amazed how they do it.
so I figure out this problem by Recoil Control Config (you can also do it by Practice :p) .
Config:
alias w10 "wait;wait;wait;wait;wait;wait;wait;wait;wait;wait"
alias w6 "wait;wait;wait;wait;wait;wait"
alias +No.Reko "fps_max 1001;viewsize 120;fps_modem 1001;developer 1;+attack;w10;w6;+lookdown;cl_pitchspeed 10"
alias -No.Reko "developer 0;-lookdown;-attack"
alias +No.Reko.1 "fps_max 1001;viewsize 120;fps_modem 1001;developer 1;+lookdown;+attack;cl_pitchspeed 5"
alias -No.Reko.1 "developer 0;-lookdown;-attack"
alias No.Recoil.Cyc "No.Recoil.Cyc.1;speak activated"
alias No.Recoil.Cyc.1 "bind mouse1 +No.Reko;bind mouse2 +No.Reko.1;bind x +attack2;alias No.Recoil.Cyc No.Recoil.Cyc.2"