My facebook design on my computer looks like on an iphone. How to change it back?

I have tried resetting my safari and everything. NO ONE i know has the same facebook as i do, i don't want it like that at all. I'm definitely on www.facebook.com it is not the mobile facebook.

If you mean that you're getting the mobile facebook design on a normal computer, you just click "More" and then there should be a "Desktop Site" option on the drop down box.

As i know you can't change it because it is determined by the website…
all you have to do is to download another browser such as Chrome