The point is the basic definition of tefiloh. And that is discussed extensively throughout Torah sheb’al peh. From Shas through midrashim, from the basics of sifrei Rishonim throughout the rest of our history.
Firstly, the purpose of tefiloh is NOT to inform Hashem of our needs. He already knows our needs better than we do. But He does want us to speak to him several times a day, and to place our bakashos before Him – He wants to hear us. Tefiloh is all about connection, and the content of our tefiloh is secondary to that. How many tefilos do we utter every day without understanding them? Or grasping them only superficially without getting anywhere close to the deep and profound kavanos that are embedded in them?
The sugya is vast and deep. And it would be a valuable undertaking to explore this to the degree possible, both for us to be able to approach tefiloh better, as well as the meriting the zechus of transmitting the precious value of tefiloh to our children and talmidim.