Please can I some adc coaching/advice I'm going insane feel so defeated

Hi I don't know what exactly to improve I feel quite terrible I was 1 win from masters (d1 72 lp and filled aegis top) but lost bad then went on lose streak. I feel so defeated, I don't know how people can make fun of "diamond players" or "low masters" players when they are so good.

I can feel the skill difference the entire game (from lane, to mid game, to late game), these players are so sharp. I literally feel their clicks in my head (sharp, fast, great reaction and decision making), and I'm watching myself click comparatively in slow motion.

I know I have alot of problems: bad cs, poor judgement, weaker mechanics, but I want to get better and try to hit masters, I don't really want to play other adc beside ezreal and vayne (I guess I am prideful) but I feel so defeated playing against players when I am directly perceiving them as insanely good.

Although sometimes I've had bad teammates (supp etc), I can say I've had many very good supports that didn't int me, played as "correctly" to support me as they can, and I failed them. I couldn't find angles, advantages, convert their efforts into a lead and wins, it feels so defeating because I know it's my fault and this sort of moment is me hitting my "limit". This game is so frustrating and I don't know what to do, can someone please help me?

https://mobalytics.gg/lol/profile/na/glico-214/overview
https://op.gg/lol/summoners/na/glico-214