Feeling hatred

So my hubby and I went to the mall with my baby sister and our son. Well our son 18 months and my sister is 11 months old. Well they’re crying and whining and my hubby gets so mad and just stands there and acts like he’s so miserable. And whines when he talks doesn’t smile or laugh. So whatever we leave the store and go and get food he just stands there says he doesn’t wanna eat. Then I just walk away from him and he just acts like he’s not doing anything. But he’s making me so miserable and unhappy. It seems like everytime we go out it’s so stressful and we can never have a good time. He’s always giving me constant anxiety. He can’t handle being a dad it seems.I’m trying to talk to him and figure out what’s wrong and he acts like a toddler. I can’t handle this anymore I just start crying out of anger. It’s so frustrating I can’t go anywhere and be happy and have someone there with me laughing and smiling. I’m so fed up