https://www.techradar.com/news/google-drops-chrome-support-for-mac-os-x-109-mavericks

Bad news if you're still using OS X 10.9 Mavericks – Google has quietly dropped Chrome support, forcing users to upgrade to a more modern version of Apple's operating system.

Any Chrome fans with an old Mac will need to switch to OS X 10.0 Yosemite or later – or switch to a different browser. The latest versions of Firefox and Vivaldi still support Mavericks, but Opera now requires Yosemite.