A VPS is like 5 bucks. Which isn’t nothing but when used as a redundancy or place to send (reasonably sized) backups, it’s cheaper than most alternatives. It’s also still a form of “self hosting”, at least for me.

Exporting, maybe on a schedule, to a keepass to keep somewhere, also works of course. But when hosting the only/main instance at home you’ll have at least one single point of failure, most likely many. Internet connection, server, network/switches, …