In a large bowl combine the ground turkey, egg, avocado oil, 2 tsp toasted sesame oil, gluten-free flour, chopped green onions, 1 tbsp grated ginger, 3 minced garlic cloves, and 1/2 tsp sea salt; mix until evenly combined.
Shape the mixture into 10–16 meatballs using your hands or a cookie/scoop, making them uniform in size for even cooking.
Arrange meatballs in a single layer in the air fryer basket; cook in batches if needed to avoid crowding.
Air fry at 400°F for 10–12 minutes, or until the internal temperature reaches at least 165°F and the outsides are golden brown; adjust time by ±1–2 minutes for very small or very large meatballs.
While the meatballs cook, make the sauce by whisking together 1/3 cup coconut aminos, 2 tsp sesame oil, 1 minced garlic clove, and 1 tsp fish sauce (if using) in a small bowl.
Use the sauce as a dipping sauce or place the cooked meatballs in a mixing bowl and toss with the sauce to coat evenly.
Check doneness with a meat thermometer inserted into the center of the largest meatball and serve as desired.