That the USA allowed Gaza to happen has put an end to the idea that Americans are the good guys and only do things that are good. The rest of the world sees this, even if heavily propagandized American citizens cannot, for whatever justifications they give.
And the USA's inability to reign its security partners in when they commit genocide has put an end to the idea that the USA has any actual weight in its diplomatic efforts.
The world is moving on from American hegemony - we will have to look to others for help in stopping America and its partners' slaughtering.