To put it into perspective: Cinemas in Japan are chill, it’s not like American or “Western” cinemas where people shout aloud at hyped scenes or laugh so loud where you can’t even hear what the dialog is or talk amongst themselves causing distractions (or yet, using their phone at max brightness that becomes distracting towards other viewers).
Instead: it’s more on immersing to a movie at your own desire, everyone for the most part is dead silent because they know that they are inside a cinema as courtesy is considered, while I’ve heard that is starting or has already started to decline in the US (& Western nations) since the experience of being in a theater isn’t the same as it used to be.
I go to the movie theater every Saturday and have been since I think 2022. I usually go to one of the earlier showings so I can see the movie and still have the rest of my day. I rarely have problems at a movie theater and the few times I have, usually someone will have sorted it out. Might be because of how early I go and the area I live in (I live in the Midwest 40 minutes away from the nearest major city).