I use Skype software installed on Windows 10 laptop. Currently when I video-chat with someone, my webcam (red arrow) is teeny. I prefer free 3rd party software that can enlarge it.
I prefer something like a split screen.
Here are some links that might help:
You might also try dragging & dropping the small image of your own video feed into the center of the call screen, which should trigger a side-by-side view of both video feeds (yours & the other participant) at an equal size. Reference Link