Prayer as an occupation with the prophets

Thoughts that came to my mind following the rabbi's lessons on the difference between the written Torah and the oral Torah:
The prayer was established by members of the Great Knesset.
Some of them were prophets.
The words of prayer have value like the prophecies of the scriptures (the text is sanctified by the power of prophecy. Like what is written in the soul of the living)
The value in reciting the prayer is a specific value (when we are not prophets) like the very reading of the prophecies in the Bible (by virtue of the sacred language?).
And this seems appropriate to the Kabbalistic view that prayer is not an appeal to God, but rather a correction in the worlds and an action that a person acts upon through the words established by the prophets.
And it is possible that the intentions of the Kabbalists are the same value of the Torah before it was reduced to words (the rabbi called this in a recorded lesson "the second reduction").
In fact, prayer as a request has no meaning according to this, but prayer as a practice, like any mitzvah, has meaning.
Does the rabbi accept that prayer can have meaning as an engagement with the Bible?