Question about Netgear LAX20-100EUS 4G LTE WiFi 6

Unless I'm mistaken, it's possible to connect it via an RJ-45 cable to your operator's modem (Box) in order to have an internet connection. Secondly, you can insert your phone company's 4G sim card to get the internet connection and the device will work as a hotspot. I hope I've been able to answer your questions.

YES, should work.

Yes, that should work. You can adjust everything in the settings.