If you are interested and wished to know the difference between an Ambassador and a Diplomat, here is a following article you can read:
https://www.differencebetween.com/difference-between-diplomat-and-vs-ambassador/
The two positions have this in common: both represent the interests of the state, and where they differ are in roles and positions.
Not only you must know the interests of your government or state but you must also know how to negotiate, be willing to know the other side, and become a resource person if the other side wants to know more about your administration or stream.
So, anyone interested? President_Trump hasn't bidden me to offer jobs in this capacity, but I'm simply throwing an idea out if anyone is interested or not knowing what they want to do.