Need help with bedwetting 12 year old boy!!!

So my son is struggling with bedwetting. It’s worse under stress or pressure. He is going through puberty, shy and timid of others, however has bursts of anger. Cries and has a victim mentality. Has trouble with making friends in school. Feels misunderstood and as if nobody cares. Doesn’t like loud places, people. Get annoyed very easily. Like to break things and to make things out of nothing. Loves playing on the computer. Edit to add that he does have some childhood trauma of being bullied as a toddler by an older child, and older kids intimidate him to this day, and self confidence is lacking due to that as well, which could contribute to his bedwetting. He doesn’t interest himself with anything, just books and computer, as a way to escape whatever trauma he has been through I suppose, any help or a suggestions would be great as I do not know what to do and am desperate.