Why was the tet offensive considered the turn point in the vietnam war

The Tet Offensive was considered a turning point in the war because in the Tet Offensive, the VietCong launched a massive counterattack all over allied posts, starting from the North down. It was all planned out and launched within minutes of each other. The U.S. Embassy was infiltrated for about 1-2 days, and when the media reported it and captured images of American soldiers dying, many American people knew that the war was far from over and demanded U.S. troops to withdraw from the war. The media leakage made the U.S. Government look bad because they were lying to the people about the war. After that, the U.S. makes a temporary deal with the VietCong, leader was Ho Chi Minh, and the U.S. slowly withdraws. After the U.S. fully withdrew, the North resumed their attacks, and the South couldn't defend themselves without a strong leader, because Ngo Dinh Diem (leader of South Vietnam) was assassinated and the U.S. were no longer in the war. South Vietnam fell to Communism on April 30, 1975.