Society is the natural result of the human tendency to live together. Since ancient times, people have realized that cooperation and coexistence improves protection, productivity, and survival.
We naturally began exchange things with other people in society, in the beginning by direct barter (like exchanging fish for meat), money is just a smart solution that solves many problems, then things naturally evolve into commerce, then capitalism.
It is a fact that the basic commerce still works nowadays, you can always sell products and services for people in your city, or even sell to the whole world thanks to the internet and globalization.
Create value, be useful for other people and earn money by doing so. Learn a skill or develop a valuable product.