Seeing as you can actually read Hebrew, and have read the Torah in Hebrew... what do you think of the following?
https://en.wikipedia.org/wiki/Almah
...Scholars thus agree that almah refers to a woman of childbearing age without implying virginity,[6] while an unrelated word, betulah (בְּתוּלָה), best refers to a virgin,[7] as well as the idea of virginity, betulim (בְּתוּלִים).[8]
Although the concept is central to the account of the virgin birth of Jesus in the Gospel of Matthew, the scholarly consensus is that the words denote a woman's fertility without concern for her virginity.[1][2][3]
So uh, oops, the idea that Mary was specifically, literally a virgin... is kind of a translation error from going over into Greek.
https://www.jewishvoice.org/read/article/was-mary-virgin
This further explains, amongst many other things... if Joseph is not the literal father of Jesus... then... his lineage is irrelevant.
But his lineage going back to David is highly important to both Christian theology and the contextual, contemporaneous way that this would work in the Jewish culture of the time, that he would possibly be able to be seen as the Jewish Messiah.
So... that's another dimension of this problem for Christians.
The interpretation/understanding given here is more like... (I think?)... that the Holy Spirit, ie, the sort of ever present, non personified idea of God... well, he/it's role here is just to make sure the biological conception happens, and perhaps specifically bless it, by way of specifically making it happen... or maybe its more like... imbue it with the pure spiritual essence of God?
"... spiritually God, physically human, and legally the heir of the Kingdom."
I'm frankly not sure that I'm understanding exactly the idea being proposed here.
I should probably also note that the author of this is a Messianic Jew, ie, one who believes, unlike I think basically most, or perhaps all other variants of Judaism... that Jesus actually is the fulfilment of the Jewish Messiah traditions, where most other Jews do not believe the Messiah has yet arrived.
I would very much appreciate any corrections of misunderstandings I may be having here... I grew up Christian, but my cousins are Jewish, but also they were not highly religious, more like 'non-practicing Jews', who partook in the holidays and traditions, but were not like, super duper serious about the theology, so we did not ever really talk about theology.
There's another theory I've heard, that's based on what seems to have been a fairly common rumor/insult hurled at Christians fairly close to the time of Jesus' life, which is basically that Mary was raped by a Roman soldier, and Jospeh more or less did a kind of pity-marriage to her, as... she pretty much would have been cast out and viewed as tainted or worthless by her family and society.
Obviously that's impossible to ... 'verify', but it does at least strike me as plausibe.