What is the meaning of Daniel 9:20?

* The two F.O.G. Bibles & Commentary below are currently a work in progress.

While I was speaking, praying, confessing my sin and that of my people Israel, and presenting my petition before the LORD my God concerning His holy mountain—

Berean Standard Bible (BSB)

While I was speaking, and praying, and confessing my sin and the sin of my people Israel, and presenting my supplication before Yahweh my God for the holy mountain of my God;

World English Bible (WEB)

And whiles I was speaking{H1696}{(H8764)}, and praying{H6419}{(H8693)}, and confessing{H3034}{(H8693)} my sin{H2403} and the sin{H2403} of my people{H5971} Israel{H3478}, and presenting{H5307}{(H8688)} my supplication{H8467} before{H6440} the LORD{H3068} my God{H430} for the holy{H6944} mountain{H2022} of my God{H430};

Strong's King James

Now while I was speaking, praying, and confessing my deviation, and the deviation of my people Isra'el, and causing my plea to fall before יהוה (Yahweh) my God, over the set apart holy mountain of my God.

The F.O.G*

The F.O.G Paraphrase

And while I am speaking, and praying, and confessing my sin, and the sin of my people Israel, and causing my supplication to fall before Jehovah my God, for the holy mount of my God,

Young's Literal Translation