Air-Fryer Greek Meatballs with Tomato Salad and Tzatziki

For the meatballs:

• 2 lbs. (900g) lean ground beef (5% fat)
• 1 onion, grated
• 3 cloves garlic, minced
• 2 tsp. salt
• 1 tsp ground pepper
• 2 tsp. ground cumin
• 1 tsp. ground cinnamon
• 2 tsp. dried oregano
• ½ cup (8g) parsley, minced
• 2 eggs
• 1 cup (60g) panko breadcrumbs 

Tomato salad:

• 4 tomatoes, chopped
• 1 tsp. salt
• ½ red onion, thinly sliced
• 4 tbsp. white wine vinegar
• 2 tsp. coconut sugar
• 2 tbsp. fresh dill, chopped 

Tzatziki sauce:

• 1 cucumber, grated
• 1 tsp. salt
• 1 cup (285g) Greek yogurt
• 2 tbsp. lemon juice
• 3 tbsp. fresh dill, chopped 

To serve:

• 4 pitas, toasted