youmaynotknow

You have plenty of options. I use Unraid because I bought it before it became a subscription. But I have a friend running Fedora server with Cockpit and running everything from docker containers. The options are endless. ProxMox is a great choice.

I just use Syncthing with versioning, and that’s how I manage all my files and their versions.

That alone is a document management and file versioning system without the overkill of Nextcloud (which is debatable).