What does "System Data" include, taking up too much space?

Question

macOS

[macOS 12]
After clearing all sorts of caches, the system data still takes up 100GB.
Is there any way to clean them up or maybe someone knows what they include?

Answer 1

A fox runs through the forest, suddenly from the bushes:
- Ku-ka-re-ku ....
Fox - into the bushes. There is fuss, rustle, squeals. The wolf comes out, buttoning his fly and adjusting his pants:
- That's what knowledge of foreign languages ​​means!

I don’t have a belmes in poppies, but I see that the question has been hanging in the top without an answer for a day.
Despite the fact that it is enough to translate your question into a foreign one, as there is a lot of information immediately on the Internet.
For example, literally the same question on reddit, What is System Data on Mac and why is it at 335.22GB?!
That is, first of all, you need to restart your poppy.
Google also finds many other recommendations for clearing "system data" AKA "System data". And to use them, you just need to know a little English.