Why do we see not much description about Jesus’s mother, Mary in the Bible?


That’s an unanswerable question. There are a lot of things not mentioned in the bible. The end of the Gospel of John says: “There are also many other things which Jesus did;were every one of them to be written, I suppose that the world itself could not contain the books that would be written.” (Jn 21:25) what did get written down was what was deemed sufficient for us to come to believe in Jesus Christ.