Don’t give up so easily. You are right, here on the forum, you will mostly find IT experts who are able to run their own servers. This is also sometimes frightening for me. I think, also avarage users should be able to use privacy friendly alternatives to Dropbox, not only system administrators! There are lots of them actually, and for those the easiest solution is to use a managed solution. Cloudamo (that I haven’t heard before) is just one of many. Generally I am always sceptical towards official recommendations and treat them as ads. One provider that most people seem to recommend is Hetzner, they offer packages starting from 3.36 Euro and you just need to sign up there and you will get a working Nextcloud installation https://www.hetzner.de/storage/storage-share
See also Affordable Nextcloud Provider | Hetzner.com