Combine finely diced tuna, mayonnaise, sriracha, soy sauce, sesame oil, lime juice, and green onions in a bowl. Mix well.
**Prepare the Spicy Mayo:**
In a small bowl, mix together mayonnaise, sambal, Sriracha, sesame oil, sugar, and lemon juice until creamy and smooth. Set aside.
**Prepare the Hash Browns:**
For air fryer: Preheat to 400°F. Place hash brown patties in the air fryer, avoiding overcrowding. Optionally, spray with oil for extra crispiness. Cook for 6-8 minutes, flip, and cook another 6-8 minutes until golden brown and crispy.
For oven: Preheat to 425°F. Place patties on a wire rack or lined baking tray. Bake for 24-26 minutes, flipping after 12 minutes, until light golden or golden brown and crispy.
**Assemble the Dish:**
Top the fried hash browns with thinly sliced avocado. You can leave them plain or season with a little salt and black pepper.
Add 1-2 tablespoons of spicy tuna on top. Drizzle with spicy mayo and sprinkle sesame seeds.