I thought Christians are the new Israelis, no?

Jesus was Jewish but he broke all the rules and destroyed the temple, so we are the new tribe of Jesus. And Talmud, the book, was written 400 years after Christ and so is the Quaran, so these are new religions.. Jesus' teaching is older. And Jesus already turned Jewish to Christians so are the Israelites now a religion or a race? I'm so confused. They're still waiting for Messiah but Jesus came already. There is an old and new testament and those are the books recognised by God. No? I'm just writing what I was told. I don't know anything myself and I don't have an opinion on anything since Idk.