Thank you, Raymond. The word Peoples“ sounds unnatural to me because I never use the word. To me, the plural of people is people. If I speak of „The People of China“ I’m speaking of all ethnic groups, languages (of which there are many) over a vast country. And that’s proper English. .  I never use the word „ humankind“ and never hear it. Just use a shorter version like human(s) that says the same thing. But, here’s a trick. Always look for synonyms. Avoid repetition. It’s better style. Once you use a word once, try to find something that means the same thing but looks different. Example. „Humans have developed a sense that they are above all other forms of life. But, people are on par with the rest of nature?“ Contrast that with,  „Humans have developed  a sense that they are above all other forms of life. but, humans are on par with the rest of nature.“ See how much better, less repetitious it sounds not to say humans twice so closely together? That’s not a grammar, but stylistic issue. English hates repetition and long words (that’s why „humankind“ is a poor choice when simpler and shorter alternatives exist.)

You do translation, and you’re off to a good start, so I encourage you to use free translation all the time to better communicate the message. That’s the Art of translation. Faithfully conveying the meaning without losing meaning. I don’t listen to English language TV, movies, documentaries  unless they’re with a dubbed over German translation. I read only German newspapers and books. Not English language ones. I don’t like reading subtitles so I skip anything with a subtitle. I don’t want to read those. The German translations are often loose translations, but theyre good translations (dubbed over) and that’s part of the Art of Translations. It’s just something you have to get used to.