hey ! gOS installed with the web installer on a pixel 4a : done (the web installer is so easy to use !)

I have some questions ^^

I've created 2 user profiles (+ the owner)   it's better if i use 1 password per profile ? (so i need to find 2 more pswd for user profiles)
If I've understood correctly I use the owner profil only to manage user profiles and I create as many user profile as I want, for exemple 2 if i want 2 different identityy to coexist on the same device without being mixed ?