Google Chrome is probably the world’s most popular browser in terms of market share. That means different people, who speak various languages, use the browser. If you aren’t happy with the default language on Google Chrome (English) and you want to change it, you can change it on all platforms fairly easily.
On your iOS device, go to Settings > General > Language & Region. Click Add language and select your language. Then click Edit on the top-right. Now move your preferred language to the top by dragging it up. This will change the default language on your iPhone or iPad. Just fire up Google Chrome and you’ll see that the language has changed.