I have the webcam on top of my desktop monitor, when I videoconference, I slide the whole monitor lower so that the camera is just above height of my eyes and I put the chat screen on the top of the screen, so the talker on the screen and the webcam are just a few cms / inches apart. I sit about an arm's length away from the webcam.

It's not perfect, but it's adjustable within 3 seconds and is very close to directly looking into the camera.