1

Surah 1 is called Al-Fatihah, that is, the Opener of the Book, the Surah with which prayers are begun. It is also called, Umm Al-Kitab (the Mother of the Book). This Surah is one of the earliest Revelations to Prophet Mohammed. It was the first complete Surah but not the first in the order of revelation. Before that, only few isolated verses were revealed which later became part of Surah Alaq, Muddathir, etc.

This Surah is named so because of its content and placement in Quran. Fatihah means a Key an Opener. It could be for anything like in this case Opener or Preface of the Quran. That is why soon after that the second Surah starts with these words “This is the Book whereof there is no doubt, a guidance to those who are Al-Muttaqoon”. So Allah gives answer of your prayer where you asked Him to show you guidance.

This Surah is both a prayer and an introduction of the Quran. A prayer that Allah has taught to all those who want to spend their lives according to God’s Will. However, the real relation between Surah Fatihah and the Quran is not that of an introduction, but of a prayer and its answer. Surah Fatihah is the prayer from the slave of God, and the Quran is the answer from the Lord/God to that prayer.

https://www.thelastdialogue.org/surah-al-fatihah-summary/