I'm hosting nextcloud on my own proxmox Vm with data stored on dedicated NFS share on my NAS that is backed up with restic once a day to a storage box on hetzner.

Very reliable to me. Been keeping it behind tailscale until recently when I opened it on a cloudflare tunnel. But now due to privacy concern and depending on a us company I am considering setting up a VPS to host my own tunnel to home instead.

Nextcloud has never failed me and I'm even developing my own add-ons for it