I watched the first ten minutes of your KR game last night and learned about all that I needed to. I'm going to prescribe three pieces of advice for you, as I feel that these are solutions to your most immediate problems.
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Stop communicating. Judging by this post and other interactions with you, I can already tell that you're a team blamer. "If only they listened/swapped to (hero)/didn't use (ability), we could have won. Instead, they ignored me!" This is a mentality that erodes away your responsibility as a play and attempts to minimize just how much agency you control in your games. I recommend you stop communicating entirely - you're tilting yourself, you're tilting your team, and you're expending mental energy that should be invested in playing the game correctly. You're shot calling to bronze players, people who are struggling to even control their heroes and play the game at the most basic level. And, if you are also bronze, I can guarantee that your calls aren't even correct in the first place. Comms and coordination aren't the way out of this rank.
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Focus on slow, focused control. You're struggling with mechanics in a way that perhaps suggests an unfamiliarity with FPS controls, a hardware issue, or some other factor. You're often bumping into walls and are pressing buttons without thought. Slow down - scout a fight, set up, and make your actions deliberate. You're bronze, meaning that you're not able to keep the same pace as a higher-level player. Emphasize your actions and commit to the growth process by understanding that you do not have the capability yet to do half of the crazy things that you're attempting. Instead, play at a very basic level and work to clean it up. That means being patient, working on timing, aim, etc.
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Don't externalize. Building upon the first two points, stop blaming others. Your entire post is a rant, a vehicle that you have employed to cope with the fact that you're bronze. Never do this if you wish to truly improve. Look at what you've chosen to describe here: very rarely do you speak about your own play. You've used so many words to instead paint an image of your team's mistakes. Logically, you would have far more success learning how to identify and punish the enemy team's mistakes (which are occurring at roughly the same amount as your team's).