@PizzaLovingNerd There is no technical reason that anbox could not work on the PinePhone, however it is still an extremely experimental feature even on the devices where it is currently available, and work has been going toward more important things for the PinePhone.
Also, I think anbox on UT has no arm64 support yet. So, it would take someone contributing on making it work to get it to the point where it could be installed and run.