Husbands not helping

I understand that my husband is working 12 hour days 5 days a week but the least he could do is watch our son for long than 30 mins. He comes home showers and immediately plays video games and then watches our son for 30 mins or less and the goes to bed and I’m left still watching him. I would like a little bit longer to feel like a human again. Some days I wanna just walk outta the house and leave him with our son but idk what to do.