I expect you have already tried a few coping tools like counting to yourself, taking a walk, taking a bath, tearing up a load of newspapers, throwing some books and cushions around, slapping some paint on a wall etc. I have tried these and lots more over the years. Anger can still be an issue but I can deal with it now. The secret is to set up a list of distractions so that when you feel the anger building you go read the list - that’s the first distraction - the longer the list the better. Then you go do something on the list.