I always use OBS "virtual camera" when screen sharing, and this can help a lot. You can zoom in on part of the screen, have multiple views of parts of your screen, cover parts of the screen (I usually have the image of myself from the camera in the corner, and that can easily be moved around to cover areas of the screen), etc.

Overall OBS can just create a generally better presentation, and make you look competent, in addition to helping with this specific issue. And of course it is free.