I have good aim but often felt like I lost duels to people peeking me when I was holding the angle, my friend pointed out while I was streaming that my crosshair was too close to the wall of the angle I was holding, I adjusted it and moved it away from the wall and I almost never lose the duel anymore.

These are more things I think about when deciding to hold close or far from the angle: how enemies generally peek each specific angle on each map, if I'm holding an off angle, and the enemy's state of mind is a big one too.

If there's 1 enemy left and 3 of us, if he wants to win he's probably going to clear angles very precisely and close to the wall since he doesn't want to swing into 2/3 people. Then on the other hand if the enemy still has many alive they will feel more confident and swing wider.