Where does a consumers energy come from?

A consumer, or heterotroph, gets its energy comes from the foods it consumes.  An example of this is a human, who gets energy from the foods it eats every day.

On the other hand a producer, or autotroph, produces its energy by itself.

An example of this is a plant, who uses photosynthesis to combine different things, like sunlight, carbon dioxide, and water, to make their own food, in the form of glucose, along with other byproducts.

Idont understand i'm sorry