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.
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I use utterly unique and very long passphrases for the most important stuff (banking, mortgage servicing, email, etc.), 2FA for those and most other things, and just throwaway crap passwords for things I don’t care about (web forums and most everything else).