I've said it a dozen times... we user ours daily, several times a day and not just for 'frying'. I often use it to roast veggies (spray with oil first then put in basket) to use as toppings for homemade dishes, pizza, omelets, etc. It does the work for me while I'm doing other preparations. I use it for baked potatoes spritzing the outer shell with EVOO and then covering it with seasonings so that the shell is the yummiest part of eating the potato. Crab cakes, wings, etc.
The secret of success is understanding that because it is convection, if your item is thicker and/or frozen, you drop the temp from the default average (370) that is the typical setting to around 350 or 340 so that the outside doesn't get 'crisped' too fast allowing the core to come up to temp. A perfect example I can give: the frozen chicken cordon bleu cooks to absolute perfection I put the two of them (one for me and one for him) in the basket, set it to 340 for 20 minutes and then walk away. When the buzzer sounds, I find them perfectly cooked, crisped with the gooey center still intact as it should be. During that 20 minutes of not having to think about it, I finished preparing the salads and sides that we had with it.
We use it for breakfast, lunch, dinner, snacks etc. I recommend you search for recipes to grasp the idea of what they can do... and the best part is not needing an oven. The air fryer does not radiate heat to the house like an oven does so it is a blessing in the summer months.