What do you use to host nextcloud?
But there are quite a few other options, from renting a managed instance to buying a hardware device with it preinstalled. https://nextcloud.com/yourdata/
For anyone who is interested in self-hosting stuff like Nextcloud but is not ready to dive into the deep end of server management, I would highly recommend checking out https://yunohost.org/. Basically it is a Linux "server" OS that tries to make it as simple as possible to install and manage services like Nextcloud.