Can some please teach me how to climb as support

Please Scenario, your team is bad. Okay now how do I carry from here? I don't want to hear about anything which relies on my team to do something, please, I have tried and failed that way. My win conditions can't be, my team needs to do something, no. Winning games just mean nothing to me anymore, because I just had the better team, who played well. And I just can't rely on them to do their job, relying on my team to do their job is a mistake. Say anything please, just help me. Diamond, Master, Challenger supports, please, help me. Why am I so bad
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