How to go about making educational videos of handwritten instructions on a digital pad, where the hands won't be included in the videos?
The easiest way to do this would be to get a graphic tablet (like a Wacom tablet or a cheaper alternative) and record the screen as you write on a drawing program such as gimp, illustrator, Photoshop, paint.net, etc. with a recording program such as OBS. You can set up custom pens that use the speed, angle, pressure, etc. of your drawing to imitate the look of a pen and to create a similar effect to one of these videos.