Setup a seperate Vlan for my Work Computer

[pyrmon]

Hey!

I was trying to setup a seperate Vlan for my work machine. Currently my internet access is setup to run via my LAN directly. My work machine is constantly checking all my devices in the network, so it isn't attacked , that is why I want to put it into a seperate VLAN so it can't access my network devices.
I tried to create a VLAN with the tag 4, but even though I put in the Mac Address that is being used for the current connection to the LAN of my work laptop into the DHCPv4 of the VLAN into the static mapping, it is not joining the Vlan.
I have attached the setup on my Switch as a screenshot and also my OpnSense configuration as an xml. If you could help me it would be very appreciated. Feel free to ask me any questions you might need.