Nextcloud, despite you’re not considering it. You can disable or not install the apps you don’t need, like Calendar, Contacts, Photos, Dashboard, Activity, etc.
There’s also a fork of Filebrowser, called Filebrowser Quantum, which I’ve been interested in, though haven’t tried yet: https://github.com/gtsteffaniak/filebrowser
The Universal Blue people emphasize containerized stuff a little too much. It’s perfectly possible to add non-flatpak software to ostree distros, it just slows update processing down a little bit.
Since abraunegg onedrive is available as an RPM, you can just layer it on top of Bazzite; download the rpm and and then rpm-ostree install ./onedrive.rpm
If the RPM works on Fedora it will work in ostree distros too. Besides, if it foesn’t work, you can just rpm-ostree rollback and it’s like you never installed it, apart from things in your $HOME like config files.
The recommendation is to avoid layering wherever possible, not that you can’t do it. Many apps are still a bit wonky as flatpaks, even if available.
No, I haven’t tried OC. Lot of people still prefer it over NC. I think both have come quite a long way since then.
I wouldn’t say Nextcloud is hard to maintain, even less so if you keep the number of apps to a minimum. The initial setup may require some work, but small instances are mostly plug and play.
Note that I’ve never used AIO. If going for containers, the community images are better, despite AIO advertised as the official method. I recommend using Podman, check out
https://github.com/0ranki/nextcloud-previews
Also a blog post: https://oranki.net/posts/2025-01-02-self-hosting-my-way5-nextcloud/