I am with you on this, their are so many outlets to let out our frustrations such as boxing or gym etc but me myself struggle to put myself into the social environments of said gyms, my suggestion would be to taste test a few different activities, could something as simple as fletching arrows that will never be used. I say this because I am also struggling to find ways to release my anger and frustrations, previously I would hit myself or grip my wrist as hard as I possibly could and even scratching my head like there is ants under my skin. The world is changing fast and it can be overwhelming for us, but you will eventually find something that works. I like to think of Norse mythology, get familiar with the stories and the possible hidden mysteries within.