My leopard gecko wont eat?

I have owned a female leopard gecko for nearly 2 months now, i brought her when she was 18 months old. She lives in a vivariumm with a heat bulb set at 27 degreesCelsiuss. She lives on sand for substrate and has a hide and a constantly well maintained water bowl. It seems i have done all i can to make a safe homely setting for her. However since i have had her she has eaten but ameaslyy 2 CRICKETS! Being honest, she looks and moves perfectly healthily but simply refuses to eat. Each night I put in a brown cricket at around 6pm. I have noticed sometimes that she approaches the cricket with stealth as if she is about to eat it but then turns away, on a more rare occasion she would actually take a leap at the cricket but misses. She then gives up and turns away. I could really use some advice please! Do i share this problem with anyone else? Am i doing something wrong?Thank youu for reading.