Still doesn't make sense. Jesus literally died on a stick for a made up story about a guy?
Adam means "man", as such whether or not it is the name of the first Human Male to "find God" or just a "tittle" of the first Human male to gain "spiritual enlightnment" or even just a metphore for the Jewish people or anytuing else you can conceive of, the point of Genesis is that Man had a previleaged place with God and forfitted it to be "like God", to be responsible for their own "truth", to be independant from God and God's grace.
That Fall is what Jesus gave himself for.
That fall that we inherited and that we still exercise to this day, is what keeps us from reaching God, so what did God do?
God came down to US, lived like us, taught US, preached to us DIRECTLY and not via prophets, channels, organizations, scribes or anything else, and he did that not because he had to but because he loved us enough to BE US so that WE CAN BE HIM.
In his bodily death ( and the pain that whent with it) we are reconciled to God vai the HS that is given to Us.
What Adam did in turning his back on God was reversed by God giving himself to Us.