Hi,
the image shows Cpanel, did you install it yourself on your VPS or is this your only and main panel to make changes to your system?
On a VPS you are usually able to first choose an OS (Linux or Windows) and then use putty or any other SSH/Telnet client to login on your server. I installed WebMin for example (alternative to CPanel, Plex and others) after selecting a Linux version as OS. I use WebMin to do some regular checks/changes on my system. But when I add new packages ie. phpMyAdmin / MariaDB (alternative for MySQL) / PHP / PHP-FPM or anything else I either use 'YUM' or do a manual download / make&&install of the latest version available.
This way you are fully in control of your system and you can decide what version of software to use. For example, installing Apache using yum (or through CPanel/Plex/Webmin) will usually not get you the latest stable version available. To be able to use the latest stable version you would have to do a manual download and install plus configuration. All this is done on system level ie. using Putty terminal in my case. At least this is what I've learned from experience using a CentOS 7 install.
SO in case you own a VPS you should be able to make system changes and other softwares as a 'root' user besides having the option of making changes through a Visual Tool like CPanel. CPanel is just a tool to make it easier for users to make changes to their hosting environment. I've had CPanel when hosting a website, not being a VPS. If the CPanel is all you have available and you are unable to login to your VPS as root (or admin on Windows) to uninstall CPanel for instance and start using some other visual server tool I doubt it if you're on a true VPS but could be:)
Regards,
Eric