In which division do people actually have common sense and are skilled at the game? Low Diamond?

I'm currently Platinum 4 and I'm still noticing a lot of Bronze type behavior, attitude and skill. It's just really frustrating. When do I get to play with people who actually understand the game, what is viable and which champion should they go for and understand team comps beyond "oh, he's OP, i'm gonna play this champion no matter what". ? :) I need to know there's hope in higher divisions.
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