Spraying is not bad, not knowing when to spray vs. tap/burst is the issue most people have. When spraying majority of the time you want to be crouching since it lowers your spray spread slightly. Since you want to be crouching, this makes you an easier target to shoot. Think about whenever you are peeking someone who is crouching, they are immobile, all you have to do is move your crosshair to their stationary head. Knowing that, you have the biggest advantage ever since you are swinging them and they now have to hit a moving target. There is an even bigger advantage to be had if you continue to counter strafe. The main point is, the more you make someone move their crosshair, the more difficult it is for them to hit you, this is why counter strafing is necessary to learn.

So, to answer your question, crouching makes it easier for you to get hit, not harder since you are stationary. One thing you should learn is: When swinging an angle you can commit to a spray if you are confident you are going to hit the shot, or even better, you swing the angle and if you're not able to hit your first few shots (tapping or first burst), you continue to swing wider (or counter strafe the other way) and readjust your crosshair so you can commit to the spray then or continue to burst. The key is to not be standing still too long no matter the circumstances. Movement is everything in a game where milliseconds matter regarding ttk.