Your question is a lot more complicated than you appear to think. There is no “original Bible”. The Vulgate is an interpretative copy from Saint Jerome, in the Latin vulgar.
The Septuagint from what I understand is not a regular copy of a book like we’d expect today. The Septuagint varied greatly in Jesus’ day, if I am not mistaken.
There are a lot of problems with the idea that you want to read “the original text.” Not least of your linguistic nightmares is that even if you were fluent in the Hebrew, Aramaic, and Greek, you would still not understand the cultural and social anomalies associated with the language.
Here’s my case in point: for centuries, there was no doubt that Mary was ever-Virgin. The people who were closest to the time of the writing of the Bible, as well as who knew the Apostles, were the best for telling us this information. As time went on, the authority of the Magisterium of the Church was rejected by Protestants.
Even these initial Protestants weren’t so wild as to proclaim that Mary was not ever-Virgin. But with the loss of any sort of authority in reading Scripture, and the removal of modern society from the ancient texts, such passages such as:
“and they had no relations until she gave birth to Jesus”
which would never have alarmed those closest to the time of the writing, now alarm heretics across the world.
“See? It says until… meaning afterwards, they had relations!” This heresy is dependent on two things: a rejection of the Magisterium of the Church, and an inability to understand the ancient language. The Fathers had no problem with the passage, because the word until, in the Greek, had a meaning of “up to that point” but did not have the implied meaning that it does today of “but afterwards, yes”. (for a further example, “sit at my right hand until I make your enemies my footstool” by the logic of such a person, this would be to say, “afterwards, get lost, Jesus”. It doesn’t mean that.)
(As a note, not all Protestants reject Mary ever-Virgin. Many Lutherans, for example, still respect this truth)
With such a removal from the ancient languages, however, we do not see nor understand some of the phrases.
**Young’s Literal Translation is probably the best for a literal translation of the Bible.
Also, try here for some Greek and Latin texts
newadvent.org/bible/gen001.htm
**
Just be cautious. If you read the Scripture without the authority of the Church guiding you, you interpret it for yourself, which is spoken against in the Bible at least twice, and you risk falling into a bad way.
Do not think yourself mighty and wise. Rely on the Church which has endured for 2,000 years, producing and defending against the greatest minds of all time.
Peter, guide my sheep. Peter, tend my flock. Peter, feed my sheep. Jesus spoke these words to Peter even amidst the other disciples! How much more will they apply to us?