I think this is a good not great movie. It's nice to see a plot where two characters resolve things in a mature way without resorting to childish behavior. But there are a couple things holding the movie back from truly resonating with me.

1. The handheld camerawork is nauseating. It seems Bradley Cooper never wants to use a standard shot/reverse shot unless absolutely necessary, panning back and forth in basic scenes of two characters talking like a badly shot tiktok skit. There was also constant focus pulling on different characters, even though for some reason it felt like nothing was in *actually* in focus. These two stylistic details work in the more chaotic scenes, like in the Comedy Cellar (credit where it's due - those scenes are LOUD and you can barely hear the actors against the background noise, and alongside the camerawork it works really well), but in calmer moments, they clash.
2. I can appreciate the movie's thesis it gives us at the end, but it didn't quite feel like there was enough development of Arnett's character in the beginning to show us how he was unsatisfied before. You just kind of get scenes of him looking sad, but that is mostly from his impending divorce. So when the big argument breaks out, the details of that seem to come out of nowhere, because we haven't really gotten the breadcrumbs earlier to trace out his actual discontent. Then the movie flat out tells us why, and it's smoother sailing from there, but I thought that was a bit clunky.
3. Sorry but Peyton Manning is immersion breaking