Umm,
No you can't.
Definition of religion:
:the belief in a god or in a group of gods
: an organized system of beliefs, ceremonies, and rules used to worship a god or a group of gods
Furthermore, your claim that religion (and you're using the second, more specific, definition) is man made is demonstrably false.
Incorrect...
I am not religious, in point of fact I would be most comfortable with seeing all organised religious entities and organisations physically forced upon the sharpened stake.
There is God...and only one God.