I just did updates on my home cloud, and among those updates was a new version of bitwarden_rs. Bitwarden is a quite popular open source password management solution. I use it for quite some time already. Until some months ago, I used the hosted version, for which I even paid a few bucks to get premium features and support the developer behind the project.
But Bitwarden is open source and it's possible to host your own Bitwarden server instance, which you can than use with the mobile apps, browser extensions and other client implementations. Unfortunately the official server implementation requires Microsoft SQL and needs many resources.
Thankfully there's an alternative implementation of the server implementation written in Rust, which is very lightweight: bitwarden_rs. It can run without problems on a Raspberry Pi.
Using Docker it's really easy to setup and you have access to all features, including those for which you would have to pay for at the hosted version.