Oh boy, if you can't perform on 400dpi on a 144Hz Monitor i have bad news for you, very bad news that you probably don't want to read.

Let's quote something:

"I don't normally go negative. I'm one to hold my own and I often top-frag"

Are you lying to us, or do you have deeper problems in life my friend? Because based on this sentence you should raise in no time.

My advise: Keep the fact's real, live healthy and make sport (atleast drink enough water while you game). This should be enough to get you to gold. Try to fill and play "backup" for people, this works most of the times if you aren't that good with the aim (based on the replay). If you are a top fragger replace "dangerous" teammates if they occupy important "hot" positions.

I really don't want to attack you, but look at your situation analyze it and make the best out of it, there are plenty of pro's that can't aim for shit compared to their top fragger teammates. But they are smart and read the game very good wich is enough to win and a quality for itself.

The aim is probably 20% of the game, acting smart and reading the game is the other 80%. You kill the enemy top fragger 9/10 times with smart placement.

tl:dr You are not that good and smart as you probably think (you still have to grow as a person) and you should try to play a more passive filling position.