Air Fryer Meatloaf

1 large egg

2 pounds ground chuck or a combination of ground beef and venison or ground sirloin

1/2 cup quick-cooking oats

3/4 teaspoon salt or garlic salt

1/4 teaspoon ground black pepper

3/4 cup ketchup

2 tablespoons light brown sugar

1 tablespoon apple cider vinegar or white vinegar or rice vinegar

1 teaspoon Worcestershire sauce or soy sauce or liquid aminos Liquid aminos are gluten-free