Hey,
Those co-ordinates printed in the logger are actually the positions of the tiles in the world, not screen co-ordinates. The interactions are handled internally by the API, but I believe they are biased to the centre of the clickable region (presumably by some kind of Gaussian distribution). As a result, the exact projected position clicked will rarely be repeated. I believe a linear randomness would not fit this use case very well.
As for beginner script threads, the tutorials subforum would be a good place to start: https://osbot.org/forum/forum/250-tutorials/
Good luck - let me know if you have any further questions. I'm always happy to help!
Apa