Is participating in the USA Green Card lottery for $50, which is refunded if the application is rejected, permissible (halal) or forbidden (haram), especially if the participant was not aware of the fee beforehand?

If the intent of applying for a Green Card is to engage in the process of obtaining permanent residency in the United States, with the payment of registration fees, then this is a permissible lottery and not gambling. However, the issue of permissibility of residing in disbelieving lands without necessity is not allowed. Consequently, it is not permissible to enter this lottery. And whoever participated in it out of ignorance of the ruling bears no sin.