How to physically rotate while visually don't

Hi! I’m making a Pixelart pinball game base on physics, and i’m using a front view to achieve this, but i have a problem with the rotation, i want the ball to rotate in the Y axis since is necessary for the ball to move, but i don’t want this to happen

269728-ex.png

Rotated pixels doesn’t look good, but if i lock the Y axis this happen

269729-ex2.png

How can I make the ball to physically rotate while visually still the same? Thanks for your help!