The real world (independent of us) is waves of probability, and it is we (and any conscious organism) who interact with it, materializing the reality that surrounds us.

Consciousness is like a flashlight that you turn on in a dark room, which allows you to see the objects you are focusing on in order to walk around.

Are there things outside the beam of light? Yes, but you have no way of knowing what they are or where they are unless you point the flashlight in their direction, or stumble upon them (which is another form of measurement).