Did you try checking if the temps and times in that book are actually calibrated for your specific air fryer model? I had the same problem until I realized my $50 fryer runs way hotter than the fancy ones, so every recipe was burning everything by like 5 minutes lmao. Maybe give it another shot with some trial and error on your own machine before you totally write it off.
yeah @sandraflores that's exactly what i found too. i got this one air fryer cookbook that said 15 minutes for frozen fries and my cheapo fryer turned them into charcoal in like 10. i started just cutting every recipe time in half and checking halfway through, then adding 2-3 minutes if i had to. now i write the real temps and times for my machine right in the book margins with a pen lol. it's annoying but once you figure out your air fryer's weird mood swings the recipes actually work decent.