So whenever i play ever since i started, i keep seeing this box over all of my teammates heads and it blocks my sight whenever im trying to get kills, it is downright annoying and i was wondering if there was a way to get rid of it?

Ive always missed a lot of headshots in this game and i think that now i figured out why ; its because of the crosshair, its not bad or anything but i noticed it to not fit the way i aim, i want a crosshair that has to be the size of the bu...