It is though to come to such meetings when the other party (the Trump administration) genuinely does neither care nor likes you.
That being said, I'm gonna point out Zelenski himself.
1) You can't be sitting in the oval office and tell the president of one of the most belligerent and bloodiest countries in the world "you cannot understand how it is to defend yourself, you're surrounded by oceans on both sides". If there is one thing that you should never, ever do, is question America's willingness to pick a fight. That was what triggered hugely Trump (go check the video). That was a terrible mistake, directed to the bulliest president of the bulliest country in the planet, a gigantic blunder on its part.
2) I feel for Zelenski, but after what happened today, his political career is over, that's what pundits and political analysts all over eastern Europe are saying (they are much more critical of Zelenski's naivety than Trump's behavior). Former prime minister of Poland Leszek Miller has been very critical and said Zelenski came very unprepared and leaves in a worse position.
He quits the White House in a critical situation and if Ukraine wants to get some kind of leverage it will have to necessarily consider a change of leadership. Zelenski's stance has been terrific in the first years of war, but now he's alone and unable to get most of what he can for Ukraine.