You’re making a dua that your duas are not amongst those that are unheard, because you know that no one else is going to solve that problem for you except Allah. And so Allah, if I’m doing something that is causing my dua to be unheard, then let me make dua to you so that I can be guided to the things that would cause it to be heard.
So when you call upon Allah (swt) you’re calling upon A Lord who is merciful. You’re calling upon a Lord who is generous. You’re calling upon a Lord who hears. You’re calling upon a Lord who can give whenever He wants, sometimes to someone who doesn’t deserve it at all.
the Prophet (pbuh) said that Allah (swt) certainly answer your dua so long as you don’t ask Him for something that is sinful, for something that’s haram or established through that dua the cutting off of your relatives, cutting off family members.