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Check out Exodus 7:1, Exodus 22:20, Judges 6:31, Judges 11:24, and 1 Samuel 5:7. Elohim can refer to single beings. Why elohim is a plural word and yet YHWH is clear about being a singular person who created alone is because elohim refers to intensification or amplification. That's why plural elohim is attributed to a singular person without contradicting itself or creating an unprecedented Triune Godhead.
Isaiah 44
24Thus saith the LORD, thy redeemer, and he that formed thee from the womb, I
am the LORD that maketh all
things; that stretcheth forth the heavens alone; that spreadeth abroad the earth
by myself;
Renowned Hebrew scholar Gesenius said so. There isn't a greater authority on Hebrew than him.
"That the language has entirely rejected the idea of numerical plurality in Elohim (whenever it denotes one God), is proved especially by its being almost invariably joined with a singular attribute"
*Gesenius’ Hebrew Grammar (Clarendon Press, Oxford, 1910), p. 399.