Unfortunately, no one can be told what The Matrix is. You'll have to see it for yourself.
I know why you're here, Neo. I know what you've been doing... why you hardly sleep, why you live alone, and why night after night, you sit by your computer. You're looking for him. I know because I was once looking for the same thing. And when he found me, he told me I wasn't really looking for him. I was looking for an answer. It's the question that drives us.
Neo- It's the question that brought you here. You know the question, just as I did.
Neo- What is the Matrix?
The answer is out there, Neo, and it's looking for you, and it will find you if you want it to.
What you know you can't explain, but you feel it. You've felt it your entire life, that there's something wrong with the world. You don't know what it is, but it's there, like a splinter in your mind, driving you mad.
-10/10 Matrix IGN