Adam was created from the dust of the earth; Eve from his rib. Neither were “conceived.”
To me - and I admit to being less than an expert - to be conceived immaculately means conception without human impregnation (which is to be conceived without Original Sin) which I accept readily in the case of Jesus but not His mother.
I see. You have a completely incorrect understanding of the term as defined by the Catholic Church.
There is no point in discussing this until you educate yourself about the terms in use.
Do please consult the catechism. Immaculate conception, as we feelthy papists use the term, has nothing to do with sexual intercourse. Wity respect to biology, Mary was conceived in the normal manner.
There’s plenty to argue about, if arguing is the goal. But the coversation will go better if it’s about a position we actually maintain.