I am always queued with the best players that know what to do in any situation , will always know what position you take and will totally headshot you if one pixel of your hitbox shows up on their screen. Why??? Can somebody explain?

Just as the title says, I'm looking for a good crosshair and other settings I could use to improve my visual clarity in the game. I have ketatoconus, which caused extreme astigmatism, and sometimes, I just have a hard time following my cros...

If so, which one is the one that provides the best community, matchmaking etc? Also really looking for communities to join to find people to play together with, maybe do "inhouse" tournaments etc. Tks in advance everyone.