How to create a prototype of application without prior knowledge of coding.

Currently I am working on an idea of making public transportation more effective. Till now the passenger can only get the information, but currently few research has been done to integrate suggestion giving platform within the bus information system. To make sure about the certainty of the bus will stop in the bus stop there should be some kind sign that the driver should get. Like how he gets the sign to stop the bus. So for that I proposed an extra function or facility within the bus information system. For that I need to make a demo of how does it work. As currently I am learning codding, and my knowledge is not sufficient to make the app. This leads me to search in the website which help me to make a prototype to explain my idea. I found a website called Invision (https://www.invisionapp.com/), in which I can make a prototype by using photos. The following video is a screen recording of using that prototype.