Never use anything but octopi, pamac or pacman - as this will result in either a broken system or future package installationis will refuse to sync with a message like
<file> already exist in file system
If you must use the mentioned software - you will need to extract the content of other distribution packages and create a custom script to install the files.
The process may be a piece - in any case read the package guildelines on Arch wiki
Looking at your profile info, it is unclear what system or desktop you run.
But there are many already integrated with the major Desktop environments.
TIP: Never use an external service to store your passwords unless you are personally 100% sure they are safe to use… Most accounts get hacked due to these kind of sites leaking your passwords (or using them self)…
Whenever possible protect all your accounts using 2FA…
But AUR package is Flagged out-of-date (2023-02-16) following release of v16.8.9
User can either edit PKGBUILD to get latest version, or wait on maintainer to update it