honestly this, but not just brainlessly play. What I see in lots of plat/diamond lobbies when i watch my friends play is that their aim is not actually shit. They mostly hit decent shots but their positioning and decision-making during the round is so bad that it outweighs their aim. Yes, aim duels are basically a 50/50 but if youre in the right position, or if youre playing around your teammates info, then this 50/50 might become a 60/40. Also watch your own VODS, but not for you to glaze yourself every kill you get. Study why you killed someone and not the other way around. If they killed you instead, look out for what happened that managed to get you killed. Was it you getting caught in the open with the knife out? Was it because you or your teammates didnt use your util to clear certain corners? Was it because all five of you were on one side of the map and the other team simply capitalized on that to get control of the whole map or was it simply aim diff?(it happens) When you look for these things, I can guarantee you that youll see so many glaring mistakes that youll be baffled as to why you were doing what you were doing and when you start to apply that knowledge in game then you will most certainly climb up the ranks.