Indirect realism is when you see something, but you see it through your own eyes, and your brain interprets what you see. It's like watching a movie on a TV, but you're not really there.
Your eyes take in light, and that light bounces off of things in the world and goes into your eyes. Your eyes then send a signal to your brain, which your brain interprets as an image.
But that image is different than what is actually out in the world. The brain uses the information from the eyes and other senses to create a representation of reality, but it's not a perfect copy.
So, what you see is actually your brain's interpretation of the outside world, not the world itself. This is indirect realism.
Think of it like looking through a window. You see what's outside, but you're not actually outside. And the view is distorted by the window and other things in your view.
Indirect realism is an idea in philosophy that explains how we perceive the world, and how the world we perceive is not necessarily the same thing as the objective reality of the world.