Zoom works well and is easy to master. I send you a link just before your lesson time with an imbedded password. You go to a waiting room I admit you.
I offer a FREE tech set up along with interview and first lesson, total duration 30 minutes.
A Laptop and USB microphone ($100) give the best results. I will also show you how to tweak the settings for best results.
The laptop is set up so I can view your hands playing on the keyboard (ironing board works well).
At my end I have a Mac with digital stereo speakers set up so I hear you at your best. I also use a Roland keyboard for demonstrations. As a back up I can email videos of me playing the acoustic piano. It is working really well especially sound quality when I am listening to you playing :) Questions welcome!