You can connect your laptop directly to your router via an Ethernet cable just for that part. You will need a wired connection to get the driver for your WiFi NIC that’s on your laptop. You will need a wired connection to your router somehow either way. If you get it, might need a reboot to get it working. Honestly can’t remember since I’ve always done it via terminal on my stuff. Once you get connected to the internet via the Ethernet cable (connect it to your router), you can go to Additional Drivers as shown above and there should be something there for WiFi/network.