Hello Mavis, The people living in the West who grow up speaking English won't usually think about the words they use when they are speaking English to each other. Many English native-speakers like speaking to people from other cultures who are learning English, and they will use simple phrases. If you go to shops or doctors they will be happy to use simple phrases to make sure that you understand. All the best with your English studies! Let me know if you have other questions.

This could be an investigation for a PhD in Linguistics, right? My impression is that, yes, everyone (including the speakers of languages in the western world) likes ideas to be expressed simply - it is clearer and easier to understand, both in speaking and writing.

That's great Thank you:)

If I may help you with the wording: Do people who live in the western world like to use simple words or sentences when talking?