As a gardener, you must understand a fundamental principle of how plants grow. Plants consume light to provide the energy they need to power and build their bodies.
Plants are solar powered organisms. They use light energy to build sugar out of carbon dioxide and water. This sugar, along with tiny amounts of minerals absorbed from the soil, is used to build the body of the plant and run its biological processes.
You must learn the light preferences of a plant and provide that light as closely as possible. Nothing matters if you don't get the light right.