I liked the idea of "frying" with very little oil and thought it would be great for use in hot weather. Air fryers also cook faster and the results are crispy. I bought a T-Fal Actifry when they first came onto the market, gosh, probably 10 years ago, but I rarely used it, other than occasionally for roast potato wedges or sweet potato fries. I couldn't find much that was appealing in the recipe booklet that came with it, and found very little online at that time. Now air fryers are popular, and there are more brands on the market, so there are lots recipes and ideas. What brand did you buy?
I use it frequently now, roasting all kinds of vegetables, fresh or frozen: broccoli, cauliflower, brussel sprouts, carrots, beans, sweet potatoes, peppers, etc., varying the seasonings, depending upon what we feel like. Yesterday, I had some leftover steak to use up, so I roasted peppers, onions and mushrooms in the air fryer for fajitas.
I used it last week to toast pumpkin seeds, and often make kale chips. I roast nuts and it makes great granola.
The Actifry is different from other brands, in that it has a paddle in the middle. It keeps food rotating, which is great, but it can mangle softer food, like fish, for instance. I have never cooked larger pieces of meat or seafood because of the paddle (which can be removed), and must keep an eye on gadget because it doesn't have a temperature setting, just off or on and a timer. I do use it for things like shrimp, ginger beef, beef and broccoli, chicken wings, legs and strips, etc., smaller pieces.
It does a good job with stir frying.
Here is a link to 150 air fryer recipes. I came across the "This Old Gal" and "Recipe This" websites when I was learning to use my Instant Pot earlier this year. (Yes, I love kitchen gadgets!)