Proxmox or XCP-ng
Both are easy to set up and use. Both give you freedom to run a virtual infrastructure.

I run both, prefer Proxmox fwiw
https://www.proxmox.com/en/

if you do run proxmox check out this repository .... jump start your rabbit hole into container
https://tteck.github.io/Proxmox/

I thought the same thing but it's not bad actually, there are some pre build dashboards you can import for common metrics from Linux, windows, firewalls etc .....

netdata is much better though (IMHO)

agreed .... BY FAR the fastest. Easiest learning curve as well

easiest by far to set up, plenty of metrics

https://www.netdata.cloud/