Original sin does not exist for Adam and Eve were the only people that committed that sin,and we are not blamed for what Adam and Eve did in regard to their sin,for that is on them,for God said the father will not bear the sin of the son,and the son shall not bear the sin of the father,but all people will bear their own sin.
But when Adam and Eve ate off the tree of the knowledge of good and evil,they had a choice between the two,their nature changed to having a choice,and all came from Adam and Eve,so all are born with that choice between good and evil,so people are born not knowing God,so they will do wrong before they come to God to do right,so all are born sinners,for they do not know God when they are born,because of that choice between good and evil that Adam and Eve caused by eating the fruit of that tree.