How to run the object as a runner game

I want to know that how to command the player to run like subway suffer game I want to make runner game

To make a runner game, if you have no experience with coding in unity, or very little, you can try to see a tutorial for making a runner game, and then after making the game, change some stuff on your own. There are many tutorials online.

I install latest version version of unity but there is many type of issue face example assets didnt import correctly mean asset seen in green colour etc

Show a picture of the error