They were written in Greek because, the deciples that wrote the new testament were raised while the Jews were under Roman occupation. Paul who wrote most of the new testament was guess what, Roman writing to people who weren’t Jewish in other countries. Most Jews at the that time in history didn’t speak or wright Hebrew, and it was usually only known by the Rabbi and those who could afford a education.
What do you think Jesus claimed. He claimed to be God of Jews, primary directly to Jewish people. He disciples went a preached across the continent but Jesus only preached in Jewish territory. Most initial converted Christian were Jew, who believed Christ was there Messiah, and excepted his new covenant. His claim to be God was based on 2500 years worth of old Jewish prophecy from the toha, what is now the Cristian old testament. People at the time of Christ didn’t speak or wright Hebrew unless you could afford the education.
Once again you have proven how stupid you are. Stop talking and go pick up some historical text books and stay off YouTube, and ticktock.

