Hi,
server managment or in a wider point of view, infrastructure management, is a full time job as app developer is an another one. If you do not have the skills to manage a server by your own, maybe a "ready to use" solution would be better. In that case, search the forum with "phalcon hosting", I know that they are some providers that offers shared hosting with phalcon already in place.
Otherwise (<=> you want your own self managed server), you may start with a cloud vps instance like digitalocean.com (0,007 $/h for 512Mb RAM and 20 Go ssd storage) or ovh.com (these are the two services I know, I personnaly use ovh) offers to make your test and learn a bit more about server management and phalcon installation on a linux box
If your needs are only: hosting just one website accessible under one fqdn (with maybe a database server ) forget cpanel and learn how to configure apache (or nginx) virtual host. It is not so hard and they are a lot of good tutorials over the web for explaining how to do that
I saw those posts but i couldn't install it
we know that, but usually when problems are happening, they aren't spokeless: what kind of error messages do you get ? Can't you compile phalcon ? You can compile it, but phalcon php extension isn't loaded ? You have to give us more informations if you want more precise help from the community.
Edit: just see that post: https://forum.phalcon.io/discussion/14811/phalcon-compose
and with: https://www.digitalocean.com/products/one-click-apps/docker/
you will be ready to go (but maybe you will not learn what's happening under the hood)
feel free to ask more questions, but with usefull informtions okay ;-)