Looking for criticism of my gameplay

Hi all. I'm a little confused. Since the start of the preseason I believe I have improved. My mechanics have improved, my knowledge of things like wave management and how to play certain match-ups have improved, and yet I am hardstuck in Gold. Would anyone be able to look at any of my recent ranked matches and see if they spot anything that I'm doing wrong? Feel free to be as brutal as you like about my gameplay. The only thing I ask is not to insult my choice of champions. I am very happy with the champions I am playing and have no interest in changing them. Thanks in advance.
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