access second and third Mozilla profiles

I have two other Mozilla profiles, one under my second Gmail account, the other under my old work email. How can I access the passwords saved under those profiles? There are passwords, particularly to my personal Proton email account, that I need to retrieve. I am unable to sign into my secondary Gmail or my old work email although I have the passwords to them. Program just keeps telling me I have to sign in under my primary account. It's an endless circle. If I try to sign into my work account it tells me to get the code that was emailed to my work account. I do not have access to the work account anymore I just want the Mozilla profile that I created. I don't want access to my old email...