I just installed my vaultwarden as a stand alone bitwarden and imported my bitwarden data to it. It was actually pretty painless and runs in like 1/10 the space of the bitwarden (self hosted) server on a cloud instance. In the next couple days I think I'll test backup and such and if it works I'll be moving over to that from bitwarden. I have used keepass in the past but I prefer programs like lastpass and bitwarden with browser plugins.