Why are languages so different from each other? After comparing more than 2000 languages, scientists noticed that languages with more speakers are usually simpler than smaller languages. For instance, most English nouns can be turned into plurals by simply adding -s, whereas the German system is notoriously irregular.
source https://www.lifetechnology.com/blogs/life-technology-news-blog/community-size-matters-when-people-create-a-new-language