In large bowl, mix ground beef, almond flour, Parmesan, egg, parsley, salt, oregano, and pepper. Fully combine and roll into 12 balls.
Place tomato sauce and broth in bottom of Instant Pot. Add meatballs, turning each one to coat in sauce. Click lid closed. Press the Manual button and adjust time for 9 minutes.
When timer beeps, allow a 5-minute natural release and quick-release the remaining pressure. Spoon sauce over meatballs. Serve warm.