Champion pool getting smaller and smaller when its getting bigger and bigger

I may be wrong and others may have other opinions, but I feel like I'm seeing the same champions over and over again. In every game I see a kai sa, irelia, sylas, karthus, cait, and ezreal. I understand that they're currently the meta right now but even I feel tired and bored of playing the same champions and kind of wish I can play others without having my teammates calling me a troll and reporting me for picking like a kalista ad in this meta.
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