How can one study Gemara without a Bible?

Peace and blessings to the honorable Rabbi Shlita,
A. How do you understand the Gemara if you don't study the Nakh? That is, it is clear that there are verses that can be understood without knowing the background, but when the Gemara mentions, for example, the killing of the priests of Nob by Saul, if you don't know the story (even though you obviously do…) you don't understand the Gemara well (and that is why there is also a certain criticism of the Haredi public for not studying the Nakh).
Although the rabbi also usually skips the legends, so it's not that bad not to know the Nach when studying Gemara, many times the Gemara brings verses whose background is very important for understanding.
B. There is no doubt that the Bible is no small part of the Torah, so why wouldn't a person strive to know the entire Torah – or at least a central part of it – even if he doesn't see great value in it?
It is just as it is appropriate for the ordinary person to know the simple, even if he is preoccupied most of the day with the eternal in the world.
Giving up on the Bible means giving up on a large part of the history of the Jewish people (even though the rabbi claims that history cannot be learned from it) and future prophecies and so on.