Sup man I’m 24 as well and still a shut in pretty much because I don’t like people and also picked back up exercising and mma after years of hockey. I think taking the rage out on the heavy bag is definitely therapeutic for you and maybe look into getting into a licensed organization for fighting. This world sucks but at least we can try and leave a mark of our memory here to inspire others. Your story is very inspirational and 70 lbs is insane progress.Keep furthering your craft even when it sucks and it feels pointless just remember how far you have come and the person you don’t want to return too. I know it’s hard in the moment and you think you feel the same but just remember you literally put all that work in for amazing progress and it would suck to lose all that potential. I don’t know what I’m existing for either I think life is overall just pain that’s why a lot of us do exercise anyways cause we’re like “fuck it give me more idc” in a sick but helpful way. Much love and hope we get through this. If you wanna talk Let me know. I don’t have real friends either tbh.