What is the meaning of Luke 18:13?

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

But the tax collector stood at a distance, unwilling even to lift up his eyes to heaven. Instead, he beat his breast and said, ‘God, have mercy on me, a sinner!’

Berean Standard Bible (BSB)

But the tax collector, standing far away, wouldn’t even lift up his eyes to heaven, but beat his breast, saying, ‘God, be merciful to me, a sinner!’

World English Bible (WEB)

And{G2532} the publican{G5057}, standing{G2476}{(G5761)} afar off{G3113}, would{G2309}{(G5707)} not{G3756} lift up{G1869}{(G5658)} so much as{G3761} his eyes{G3788} unto{G1519} heaven{G3772}, but{G235} smote{G5180}{(G5707)} upon{G1519} his{G846} breast{G4738}, saying{G3004}{(G5723)}, God{G2316} be merciful{G2433}{(G5682)} to me{G3427} a sinner{G268}.

Strong's King James

(13) Now this tax collector, standing there from far away wasn't even willing to lift up his eyes to the sky, rather beating his chest says, 'The אֱלֹהִים Elohim! Be merciful to me, a deviating-sinner!'

The F.O.G*

[13] But the tax collector stood at a distance, not even daring to look up to heaven. He beat his chest in genuine sorrow, praying, 'God, have mercy on me, a sinner!'

The F.O.G Paraphrase

‘And the tax-gatherer, having stood afar off, would not even the eyes lift up to the heaven, but was smiting on his breast, saying, God be propitious to me—the sinner!

Young's Literal Translation