Runner style game, examples?

Question

Android

I set myself the task of creating a primitive game (runner).
But I ran into the problem that I am a complete gringo in programming. I would be grateful for any tutorials both in text and video format on creating a runner for Android (you can use Unity). It is desirable with the analysis of the code part, and not just the design. Well, or in extreme cases, at least similar in style to the game.
And, well, yes, the runner is in 2D format, that is, upward movement, overcoming obstacles.
And, yes, I can google, but maybe someone who has come across / knows / wrote such guides himself, and will give me the opportunity to spend much less time searching for the right one.
Thank you for your attention, have a nice day.

Answer 1

Tutor from the official site.
Tutor on 3D-runner.
Mix of runner and flappy bird.
Another 2.5D runner.

Answer 2

www.youtube.com/playlist?list=PLiyfvmtjWC_XmdYfXm2...

Answer 3

Here are the finished games on the ChupaMobile website:
www.chupamobile.com/app-source-code/search/runner Buy
for a small price, change the look, publish - profit ;-)