Speaking from my own experience and that of my family of wife and two now adult sons do not believe that prayers to Jehovah /God are answered .
So it must also be true of all other religions and their believers also.
My wife and I were JW`s for 33 years and and I don`t believe anyone prayed harder than my wife and I at various trials we faced during those times in those 33 years.
We may as well have been like the present day Jews who pray to a brick wall