You can get a stem for a threadless headset that has adjustment to change it's angle. However if you are buying a new bike, I would think you buy a bike that more suits the position you wish to have on a bicycle. Without having to change it up.

An Electra Townie or Electra Cruiser 7D might be the better choice for you. https://electra.trekbikes.com/us/en_US/townie/