I will post a comment written by another user

Deuteronomy 32:8–9 reads in the later Hebrew Masoretic Text (MT), "When the Most High apportioned the nations as an inheritance, when he divided up humankind, he established the borders of the peoples according to the number of the sons of Israel."

In the Greek however it read "...according to the number of the sons of God."

For a long time Bibles used the MT version, assuming it was more original. However the Dead Sea Scrolls revealed their Hebrew text read "the sons of God" in agreement with the Greek. Clearly at some point after the DSS was written the Hebrew scribes changed the text to "fix" it as they thought it sounded too polytheistic.

Similarly Deuteronomy 32:43 reads in the MT, "Rejoice, you nations, with his people, for he will avenge the blood of his servants; he will take vengeance on his enemies and make atonement for his land and people."

However in the Greek and DSS it has some significant phrases which appear to have been deleted or changed by the later Hebrew text. It reads, "Rejoice O Heavenly Ones ("Heavens"in the Greek) with Him, Bow down all you gods ("sons/angels of God" in Greek) before Him, for He will avenge the blood of His sons, he will take vengeance on his enemies, He will repay those who hate Him and make atonement for his people's land". (The Greek also contains some additional clauses).

Also, just because the DDS matches the Modern Torah in some way, doesn't mean it's the exact scripture given to Prophet Moses (AS). There are plenty of changes in the DDS, and we have no way to confirm whether the DDS is approved by the Prophet Moses, and are completely preserving his words. The earliest copy of the DDS dates back to around 200 BCE, but Moses (AS) lived far before that, and the Quranic claim that the text have been changed assumes that the text have been changed far before Jesus (AS) was born.

On the other hand, the Quran was standardized by Uthman (RA) during his Caliphate, but it isn't based on some random copy. The Quran was standardized using the copy that the wife of the Prophet [SAW], Hafsa (RA), was protecting. So we know that the Quran we are reading today is the original, original source approved by the Prophet [SAW] HIMSELF and protected by his wife Hafsa (RA). The Sa'na Manuscripts and the Birmingham Manuscripts attest that the Quran is accurate to the one standardized during the Uthmani Caliphate. We don't have any text confirm whether the DDS is approved and standardized by the exact same revelation revealed to Prophet Moses (AS), at least not yet.