I am facing proposal issues. People don’t respond and due to my restriction of Syed shia I have limited options. There was a family which came all went good but it’s been a week no respond. Can you guide me some dua through which I can pray for their positive response and can I specifically pray?

Perhaps you should try widening the circle to believers who have a good ethics and morals.
After prayers call upon the most merciful seven times in prostration and ask for your needs