[Lanrei]

If you want to store you passwords locally, then at least use something like Keepass or KeepassXC. It's far from a perfect solution as it's still vulnerable to targeted attacks when it's being used if your computer is compromised. But at least they're not store in plain text. Also password auto-typing and generation are nice to have.

You can sync the encrypted files to your phone or other computers.

[KennyBlanken]

This is why newer versions of MacOS require you to grant permissions for an application to access folders in your user account. If you keep the keepass database in a folder like "secure", then no other program will be able to get to it. On Linux, there are a ton of ways of implementing something similar.

KeepassXC requires authorizing a plugin, and authorizing specific sites before it releases a password.