Isnt that the worst? And some shows/movies are even more difficult to hear. Of course, Closed Captioning helps when it is available.
Apple Air pods have something called Live Listen: "With Live Listen, your iPhone, iPad, or iPod touch can act like a microphone that sends sound to your AirPods. Live Listen can help you hear a conversation in a noisy area or even hear someone speaking across the room."
I ended up purchasing something called Bose Hearphones, which also can control how/where you want to listen (in front of me, all around 360 degrees, for example). I can also control the background noise, how sensitive to be. When on a plane, turned down the background noise all the way and it was the same effect as the Bose QC35. When watching tv, i set it about +10 and can hear the tv, like a real person (its amazing!). BUT neither of those are cheap, the big drawback.
I think at your follow up appointment post surgery (MRI follow up maybe) they will talk to you about hearing options as well.
BY the way - hope the surgery went well and you are doing ok.