This is a good suggestion. Docker is more mature and has more resources, so it's better to learn the ins and outs of containers. After getting comfortable with it, you can move to Podman and have a much better time tackling its peculiarities regarding permissions and rootless.
I used Docker for years and only recently decided to give Podman a try, porting my Lemmy instance to it.
This. And to add to what other commenters have said, by using Bitwarden and paying for their Premium plan (very cheap, just $10/year), even if you don't use all their features, you're supporting a good project. It's critical infrastructure, I think the price is more than fair.
Either way, you should always make periodic backups from any cloud service you use, encrypted of course.