You can install zabbix server & use myzabbix.myvs.com as a virtual server with proxy to access zabbix dashboard. Just follow this documentation:
[Download and install Zabbix](Zabbix installation on Debian 12)
You will install zabbix server, zabbix agent and it will use your Php, Mysql server & Apache/nginx server already installed with Virtualmin installation on your machine.
Then you will have to configure zabbix to monitor your desired device & services.