JFK famously told the people of Berlin that he was a doughnut and Carter famously told the people of Poland he lusts for them and is never going back. Are there any first hand accounts from members of the crowds on what they thought of these speeches?
I cannot answer your question, but it has been noted before (this post by u/vpltz) that the JFK story is a misconception. u/Lalongo21 has also noted here that he used an interpreter