Unfortunately, Times New Roman isn't a font we're able to offer because it is copyrighted and requires individuals to obtain a license for commercial use. Times New Roman is a Serif font, so you might try a font like EB Garamond, Crimson Pro, Lora, or Libre Caslon.
You can find all of the fonts currently available in Atticus here: https://www.atticus.io/fonts-available-within-atticus/