Dude your equipment makes a huge difference. I played on a laptop, a 10 dollar mouse, and a small mousepad and I made it to A+ on ESEA at peak.
I saw the most trashcan players who did well in some of my "high level" ESEA matches, making terrible decisions and had mediocre aim at best. But, they had advantages because their monitor had a higher refresh rate, their mouse is snappier and more responsive, their keyboard is more responsive, and their PC plays at a high framerate.
But, if you have 2k on MM with good equipment, then you should consider uninstalling.