Having your amnesty application rejected (whether the court judged fairly or too harshly) is not in any way or shape fraud. Law is complex and many refugees and asylum seekers don't fully understand the law. Even hoping it applies to you optimistically would not be fraud. Fraud is only when you purposely lie to try to gain the right to stay here. Such things happen but not nearly as often as anti immigrant people claim. Something that seems to happen more often is anti immigrant politicians lying and trying to break the law in order to restrict immigration such as by withdrawing TPS by claiming unsafe countries are now safe(so people can be deported)