There are many reasons why a patient might not be a candidate for FUE, including poor donor hair, large areas of baldness, young age, excessively curly hair, unrealistic expectations, medical conditions and scalp diseases that do not permit transplantation. Other reasons are also possible. I can't say for sure why you were deemed not to be a candidate - at least 40 possible reasons exist
in order to make a judgement on whether or not you are a good candidate for hair transplant, we need to see some pictures and have history of your hair loss. With out those, we can not make an evaluation and make recommendation that best suits your condition.