Use the “passwords” feature to check if one of yours is compromised. If it shows up, never ever reuse those credentials. They’ll be baked into thousands of botnets etc. and be forevermore part of automated break-in attempts until one randomly succeeds.
I think its almost a crime that browsers havent evolved to make users generate unique, secure passwords by default. Its just another huge sign that these browser companies dont care about security or privacy, despite their marketing departement rabbling those words.
I dont think there has been any evolution at all in this area. Browsers can save passwords but they dont help the user generate secure, unique ones, and dont encourage users to have separate accounts. Instead the web is trying to make users use something like Google or Facebook logins, so they are completely dependent on those tech companies.
Firefox generates random passwords for you by default. You have to disable it in the settings if you want to use another password manager besides Firefox’s built in one.