What to do

I’m so unhappy with my husband. Any happiness I have is from my children. He gave up on our relationship awhile ago. He’s constantly on his phone, says he’s too tired at night to talk to me for a few minutes, if I try to talk to him he gets up and walks away. I’ve had enough. I’m like 95% sure he looks at porn on his phone. The only reason I care is because he made such a big deal about it being so wrong to him and him telling me he’d never do it. I’m so disappointed 😔 he’s so different and I miss the man I married. Or the man I thought I married. When I first had our son he treated me amazingly for the first week. Shortly after it went back to normal. Calling my stupid, dumb, making me feel inadequate and unwanted. I’m heartbroken and all I want to do is hurt him the way he’s hurt me because nothing ever changes with the way he treats me. He’s rude to me and our kids. I daydream about a husband that would actually treat us like he loved us. Didn’t ignore us, wanted to be around us. A husband that will actually talk to me like an adult and not run off because it’s the easy thing to do. A husband that cared about his family and made time for them.