Why did Jesus stay on the Pharisees?

The Pharisees were correct Jesus was not keeping the Law of Moses. Jesus healed a man on the Sabbath and that was clearly him breaking the Law. He was no messiah of the Jews. The Pharisees’ were the only people keeping the tradition of Yahweh when everyone else was against it. If Jesus was Jewish then he wouldn't have been feuding with the Pharisees. The Pharisees kept the law just like Malachi 4:4 says to do. You can not change the laws and commandments of old because Yahweh never changes just read Malachi 3:6. Go back and read Isaiah 53 the servant died for his 'people' the ' Israelites' not the whole world and also if the Jews killed Jesus then Jesus was not the messiah but a false prophet of Deuteronomy 13.