If we continue to see our prayers unanswered maybe we need to reflect on these questions.
Is the Holy Spirit inspiring our prayer or is it our flesh? Is my request for selfish reasons or is it for the sake of others? Do I enter my prayer time with a spirit of complaining in my head? Does the outcome of an answer to my pray separate anyone , including myself, for God? Are you asking in Jesus name and would He ask for the same?
What are you asking yourself before you ask God?