vaultwarden was a simple service that pretty much holds all of your passwords. keep in mind that to access this service, it must be over https, so getting an ssl certificate is crucial. for importing my passwords, i had to use a tool to convert my passwords since i was not using bitwarden, and it did not support the format that my current password manager uses. after converting it, it worked just fine.
i never really got too much into it, and i know i can integrate it with the bitwarden extension, but i will revisit.