Why Doesn't God Answer Prayers?

Why Doesnt God Answer Prayers? One reason he has not answered is because when we pray we can not go back and take the situation from him either by trying to fix it ourselves or doubting. God doesn't answer all prayers because somethings are prayer for God can not do it. For intance a single or married woman praying for a man that is already married. Whatever we pray for it must work together for our good not against us.