We all have other responsibilities. So we do not manage to do this as well as we might like. People all over the world are speaking English. And the vast majority of them are people whose maternal tongue is not English. But others may have noticed as I have that International English is quite different, and more full of authentic self-expression than the dry, boring stuff which the Americans and the British write and speak.
People pay less attention to formalities of grammar and spelling.
They express themselves more briefly. They use poignant turns of phrase from their native languages. English is the international language for political-historical reasons and not by virtue of anything superior about the language. English is the international language because of the former power of the British Empire, the influence of the BBC and of course the military-industrial might of the United States. But so far as the language itself goes, it is one of the least suited for an international tongue.