Vaultwarden is a lot easier to self host than Bitwarden
But like all community-made open source stuff, If you want to use it for "production" stuff you should invest in audits and contribute/fund development
I've been self-hosting Bitwarden (and giving them money) for a few years now, it is really easy with Docker and a reverse proxy. What kind of challenges did you encounter with Bitwarden?
Vaultwarden uses fewer resources and runs fine on a $5 digital ocean VPS where I had some issues with Bitwarden. I hardly have to remember that I'm running it myself.
But like all community-made open source stuff, If you want to use it for "production" stuff you should invest in audits and contribute/fund development