How do I save my username and password in Firefox for website access?

Thanks for your suggestions, everyone! I'm definitely going to look into using an app for better password management.

If you want to know more about where Firefox stores user data, check out Mozilla's support page. It provides helpful details on profiles and managing your saved passwords.

I actually use a separate app called KeePassXC to manage my login details. Plus, there's a Firefox extension that helps autofill those details whenever I need to log into a site. It works really well! You can check it out at keepassxc.org for more info.