How to be okay with your partner watching porn

Before anyone says anything about how porn is okay and its not cheating, I know that. I agree with that.

We used to have a great sex life. When I was pregnant it dropped off, which is expected. Then the baby came and we still barely had sex which is also understandable. We were exhausted. I started mentioning that I feel like we aren't having sex enough and he was so offended. So I kinda let it go. But it didn't get better. So when you combine the lack of sex with my ridiculous anxiety and the fact that I hate my post partum body, I just feel like crap. So after several fights and a lot of vodka, I decided irrationally that he's either cheating and getting laid elsewhere, or he's watching porn. Now, we've been together for 5 years and I've never asked if he did. I guess I never cared. Our sex life was great... honestly I guess I assumed he didn't because why would he need to? Whatever so anyway. I snooped his phone. Don't judge, I regret it deeply. Anyway I found porn from that same day he watched. A day we didn't have sex after not having sex for a long time. I was wrecked. I called him out and he claimed some buddy sent him a link blah blah. So I said I didn't care as long as that isn't the reason we aren't having sex, and of course he said it wasn't. Fast forward a few weeks later and the exact same scenario happened again, down to me finding porn that he watched that exact day. I called him out again but he basically refused to talk about it, and even said that it had nothing to do with me. I have no idea how often he watches it.

I get it. He's a grown man with needs and sometimes having a baby and all of that makes it difficult to have sex all the time. So my question is, how do I become okay with this? I don't want to fight about it. I don't want to think about it. I wish that I didn't even know about it. What can I do or what can I tell myself to be okay with this? Before anyone suggests it, I won't tell him not to do it, and we will never watch it together.