its just time imo, anything from iron-silver is either a physical disability/equipment or you just havent spent enough time grinding the game and building up that muscle memory or thinking capabilities. Good luck
I don't think iron-silver is a equipment issue imo. I legit had office mice, 60hz monitor and only like 100fps and still got to p3. I think it's more of a mechanical issue. Low elo players either don't use util or use it incorrectly. This allows to you to punish them with mechanics.