I would highly recommend buying a Samsung S10E second hand off of ebay or something for $100 and using that. Once you've used Dex and Nebula with a bluetooth mouse and keyboard it will all click. It's incredible.
Nebula is Nreal's proprietary virtual workspace. DeX is a feature offered on many mid-to-high-end Samsung phones where you can plug it into an external monitor, mouse, and keyboard and get an Android-based desktop-style experience with draggable, resizable windows.