Trust me, it's possible to aim properly in CS and it's only random if you let it be.
Relink those videos you had a few weeks ago...there was one where you were on a serious killing spree. :)
They may not help my point here to the untrained eye . Especially because there are plenty of times where I do let it go random. There's a calculated risk there happening at a fraction of second to decide that "hey that guy probably has low health at this point... go full random, attempt to control the recoil with slight randomness, or aim and tap/burst (different rates depending on the weapon) knowing exactly where the shots will land."
But really CS is pretty simple, aim at the heads and click.