If Old Testament Judaism was a monotheistic religion, and Yahweh wanted to distinguish the Hebrews from their neighboring countries' polytheistic religions, why is His name אֱלוֹהִים (Elohim) plural?
בְּ·רֵאשִׁ֖ית»be·re·Shit»In the beginning בָּרָ֣א»ba·Ra»created אֱלֹהִ֑ים»E·lo·Him;»God אֵ֥ת»'et» הַ·שָּׁמַ֖יִם»hash·sha·Ma·yim»the heaven וְ·אֵ֥ת»ve·'Et» הָ·אָֽרֶץ׃»ha·'A·retz.»the earth
HiSB Gen 1:1
In the beginning, God created the heavens and the earth.
ESV Genesis 1:1
אֱלוֹהִים (Elohim) is used "no less than 2,500 times" (Pohle-Preuss vol. 1 Part II, ch. 1, §1, §§1).
My question is more general than "In Genesis 20:13, why is elohim with a plural verb translated God rather than gods?" or "Why is Elohim translated as God rather than gods in Genesis 1:1?."