Culture / Westernization

What is the definition according to the rabbi of a legitimate change that results from a good change in culture (=moral), and in contrast to it, what is a cultural change (one might say Western) that is not good?
Ostensibly, Halacha is supposed to introduce (according to the Rabbi) good values ​​that simply did not exist in the days of the Sages and that require a change in values ​​in Halacha, and therefore these definitions are important, because it is clear that there are eternal values ​​that cannot change, otherwise there would be no Torah.
The question is, what are those values ​​that should be entered?