How to run browsers so they don't require profile files?

Question

Google Chrome

I can’t find the info - is it possible, and with what key, or how to stir it up so that the browser starts without touching the user’s folders. Or how to disable everything related to profiles altogether. Just so that the process runs exclusively as a BROWSER and not as a browser with a bunch of unnecessary kaki. The problem is that the profile data is occupied by the same parallel session process of the same user. The first one connected has all the rules, the second one does not load the browser and gives an error. Thank you.

Answer 1

chrome-h

--user-data-dir=DIR
              Specifies  the directory that user data (your "profile") is kept
              in.  Defaults to ~/.config/chromium  .   Separate  instances  of
              Chromium must use separate user data directories; repeated invo‐
              cations of chromium-browser will reuse an existing process for a
              given user data directory.

firefox -h
--profile <path> Start with profile at <path>.