The ones tell you too get help are often them who trolling and want you too get angry, they are the ones who need the real help, that's a not normal behavor.

That you get angry are normal, no problems, that total normal reaction from someone who feel he can win but do you have another one ruin or cheating, you get upset because of that, unfair fight.
When the anger going over to treathing, than you should consider take a longer break.

Check also how you sleep and eat, that can also be a trigger for you, and stress from your daily life that effect your temper.

Temper are good, that make you wanna win.