You must not have lived through that period to be buying the Left’s propaganda on Nixon..
I was born May 1969 so I know very little except for the impeachment.
Needless to say, the histories written by the people that succeeded in overthrowing Nixon will be somewhat biased. It took several attempts at "scandals" (the "secret bombing of Cambodia", the Milk Fund Scandal", etc.) before the Left finally got traction through their instrument, the media, to overthrow Nixon.
Consider this: The North Vietnamese violated the Peace Accords and went for a direct armor-supported invasion to overthrow the South Vietnamese in the Easter Offensive 1973. Nixon stood solidly in their path and ordered B-52s and carrier bombers to attack the NVA columns to stop the assault. He also supported Israel directly and warned Brezhnev off during Sadat's attack on Israel in 1973.
The enemy knew that they had to get rid of Nixon to win - so the American Left pulled out the stops to come up with any reason possible to eliminate him.
They were successful, and Vietnam fell while our country was led by a treasonous Democratic Congress and the hapless Jerry Ford.
Quod Erat Disputatem