I have no visa and I want to go back Pakistan...

In light of the current conditions and the closure of airports, it has become difficult for the residents to return to their countries, but you can contact the embassy of your country to arrange the necessary procedures for your return. As for the residence, in light of the new decisions that led to the closure of the airports, no fines will be imposed against you

To complete the answer to your inquiry, it is possible to coordinate between you and your country's embassy to take advantage of the extraordinary trips program, if available.