Printer is Printing on Both Sides of Paper

Normally, when you want to print something, you should see something like this:

If your printer is printing on both sides of your paper and you don't want that, click on the More Settings option in the bottom.

Upon doing so, you should see this:

Make sure the Two-Sided option is unchecked!!!!

Once unchecked, try printing. Your papers should only print on one side now. If you continue to have issues, get help from a technician.