Hi, from personal experience I will suggest some things.
Try running wheneven you feel angry, run very far dosent matter how far you go just run and run and run.
Delete all the social medias in your phone and computer, see you might think this is generic advice but the amt of difference it makes is so fking huge, I used to get depressed just looking at peoples lives but now I dont have social media and when I talk to them I discover my life is far better than theirs (its all fake on the socials).
When you feel really really angry just get inside a room, lock the doors and shout as hard as you can, curse the living shit out of that thing that made you angry, this works like a charm for short term.
Dunno how much this will help but meditation helps me keep calm and focused, I dont meditate regularly but when I need it, 'medito' is a great free app, it is a non profit and everything in it is free
also I read your replys above, please try and not get into regular drinking, and smoking it will work now but steadily destroy your life down the line and you woudnt even notice, I have seen it very closely, please dont
Hope you find peace !!!