How can I use Accounts / Profiles to run an older Version of Firefox - Version 132 for example ?

I recently opened this 'bug' which ''may'' involve my inadvertent use/misuse of Profiles. https://bugzilla.mozilla.org/show_bug.cgi?id=2052294 How can I locate other (older) Profiles in the Mozilla Firefox structure and use this to run an older version of Firefox ie: 132 or other Version that I consider to be more stable. (I have already seen where it is not recommended to go to an older version, once a profile has been used on an updated version. At this time - I feel any damage has ALREADY been done & cannot make things much worse.)