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.
For me, if this happens, it has no impact since almost every page i sign up to has a unique password. The most important ones has mfa as well.
Use a password manager. Simple.
Same, but I do have some level of worry regarding portability. My solution isn’t local or self hosted, as I was looking for easy and works across Linux/Windows/Mac/Android/iOS. I do not look forward to needing to change to a new password manager in the future, but given the way everything seems to be going it seems likely that I’ll have to at some point.
It takes a little more effort to setup, but the alternative to syncing a local keystore db like KeePassXC would be vaultwarden, which is a self hosted open source Bitwarden server that gives you all the features of Bitwarden and has full compatibility with all the clients.
Spinning it up is actually very easy, you just have to decide if you want to integrate SSL via a reverse proxy setup or just use the builtin webserver for HTTPS.