Setting up a virtual router from a computer?

Id like to get the gen 4 special events to send to pokemon home. I have an iphone so cant use the hotspot: My complex’s wifi doesnt have a password, but i have to register the device using its mac address. When looking for an access point, i cant get it to connect, so i figured i should try and find a virtual router if possible

Is this possible? Is making a guest wifi possible? Really having trouble and could use some help