Here, you see a star in its larger environment - ginormous gas clouds. Stars are born from these clouds, they shape and influence these clouds, and their death creates new clouds. Above you see a star affecting a larger gas cloud environment, creating a bow shock in the clouds - just like a boat creates a bow shock in water, or a wind turbine creates a bow shock in the air, stars are shaping the larger environments in which they find themselves. Here's another example.
We exist in a sea of gas - we come from this gas. Gas!
These clouds are primarily hydrogen, but also contain everything that would make up a star and its planets - iron, silver, gold, carbon, everything.