Forgot my Firefox password manger’s password

Mac OS tahoe, 26.4.1 , fire fox 149.0.2 My main Firefox password is functional Firefox I click on three bars upper right then select on passwords I see a website address like Norton, below is my user name and below the password with dots When I click the eye ball window opens “ Firefox is trying reveal saved password l. Enter the password for the user “steve “to allow this I enter my password the window shakes Somehow I forgot or changed the password manage password ? How do I reset just Firefox password manager password. My iPhone with Firefox I can See all my passwords Help steve , I’ve been a Mac guy since my Mac plus , Firefox guy since 2005 ''[email removed]''@sbcglobal.net