I have to interact with people heavily in my job. I'm also a major introvert. By the end of the day I'm exhausted from what I would call mindless chit-chat. Depression from alcohol most likely further made me look inwards to escape the voices of normies. So if it helps, I have spent many years feeling isolated and depressed. I know as an introvert I need "solitude" to recharge my batteries, but I also need social interaction to feel whole.