Was Jesus a Jewish prince?

If Jesus was the descendant of King David and his birth was marked by a star, considered the sign of divinity than the three kings visited the crown prince of Israel and not the future founder of Christianity.

If Jesus was a crown prince what explains why the romans ‘crowned’ and mocked him as the king of the Jews than he was killed to stop him reforming the church.

If Jesus was the rightful king of Israel and the real leader of the Israelites than ever since his death all Jews are following the wrong religion?