How to generate terrain in unity 2d?

Question

Unity

It is necessary to make an arcade in unity2d. It needs, which is logical, the generation of the landscape. At the same time, it is not difficult, on the contrary - it is necessary that the earth sprite together with the collider, in one line, without height differences, simply infinitely generated ahead of the player for a certain distance. Without biomes, mountains, caves and other things - in one straight line. How many lessons and forums have not been rummaged through - either it’s not right, or the generation is too complicated, or it doesn’t work. How to implement it? Through Instantiate? Does anyone have a ready solution?