Can I use verizon home internet without access to coax or ethernet
The 5G home internet? Yes you can configure it and then put the box near your window and use wifi only. You only need power.
Please see the link below for more info as you have the option for ethernet as well as Wi-Fi.
https://www.verizon.com/support/residential/internet/home-network/overview#:~:text=Wireless%20(Wi%2DFi)%20networking,Fi%20clients)%20to%20connect%20to.
-Natasha