Could someone please help me find my mistakes?

Hi, I am currently a Gold 3 mid-laner who mains Yasuo, Kassadin and Zed. I notice that I tend to get a lead during laning phase, but struggle to "carry" games thereafter.. Could someone please help me improve for Season 9 via spectating me or watching some of my replays? I think it's really hard to type what I do in game because I would probably be biased towards my positives.. Thanks!
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