Hi,
One reco regarding your pfSense VM settings in Proxmox : I'd recommend disabling the Proxmox firewall from this VM's interfaces, as it might interfere with the rules you'll set in pfsense.
For instance, if you allow some traffic on the pfSense interface, but did not also allow it on the proxmox firewall for the VM, then you might run into trouble.
As pfSense is a firewall, there's no point in enabling Proxmox's filtering on top of it 😉
In addition, if the 192.168.7.214 interface is the "outside" (WAN) interface of you firewall, all incoming traffic is discarded by default, you'll have to define explicit rules allowing ICMP for instance for your tests.