People forget you cant back date the meaning of words.
The torah was compiled and translated during the Babylon captivity and we have but a few scraps of a handful of just mere characters of the language 800 year prior.
Every Hebrew lexicon that anyone even uses, defines adam as the Hebrew word for "humanity". That's just a fact. And the earliest uses of adam in the Bible are not talking about an individual. That's why so many translations use "humanity" or "mankind". Such as in Genesis 1:26-27.
So I'm hoping that you're not disagreeing with 99.99% of Bible translations and scholarship.
Adams name, in Hebrew, means "humanity". He is an archetype for humanity. And everyone knows this. And Eve is too. In Hebrew her name means "life". These are Hebrew words.
Examples that translate Adam as "mankind" or "humankind".
Genesis 1:26 NIV
[26] Then God said, “Let us make mankind in our image, in our likeness, so that they may rule over the fish in the sea and the birds in the sky, over the livestock and all the wild animals, and over all the creatures that move along the ground.”
Genesis 1:27 LEB
[27] So God created humankind in his image, in the likeness of God he created him, male and female he created them.
Genesis 1:26 NET
[26] Then God said, “Let us make humankind in our image, after our likeness, so they may rule over the fish of the sea and the birds of the air, over the cattle, and over all the earth, and over all the creatures that move on the earth.”
Genesis 1:26 NRSV
[26] Then God said, “Let us make humankind in our image, according to our likeness; and let them have dominion over the fish of the sea, and over the birds of the air, and over the cattle, and over all the wild animals of the earth, and over every creeping thing that creeps upon the earth.”
And even more word for word translations are written by translators that know this. NASB and ESV for example just say "God created man". They don't say "God created the man, Adam, in His image". Right, because even though in Hebrew it says "God created adam", that's not what it means.