Jesus was a Torah observant Jew to His death. But
Back in Jesus's day, not all the Jews were. There were many sects. Dominated by Pharisees and Sadduccees. They had spiritually lost their way. The more He tried to restore and guide them the more they hated Him.
Similar to Trump trying to restore our Republic and Congress and DS in there greed and hunger for power and control working against him.
It's not just the Jews who are of the Synagogue of Satan. It's much deeper than that.