Stuck on a globe with a exclamation Mark (please help)

Ah, this relates to the Apple T2 chip: If your Mac starts up to error -1008f - Apple Support

The error you are seeing is often related to your Internet connection, which can sometimes be resolved by using an Ethernet connection between your notebook and your router. This is where a USB-C-to-Ethernet adapter would come in handy.

The information you were told is incorrect. You can connect your notebook to a network either by a wireless or wired connection. Using one type does not exclude the notebook's ability to use the other.

As I mentioned, this type of error typically relates to using a wireless connection, but also the how your notebook is connecting t the Internet. For example, if you are required to enter a username/password in order to gain Internet access (something you would find at a hotel), the Internet Recovery Mode will not work. There are a number of other reasons for it to fail as well.

Per chance are you also seeing an error number, something like: -2002f, along with the globe?