Because Google typically only promotes the current version on its main homepage, you must use specific standalone or archived links to find version 109:
Chrome 109 was released in . It is notable because it is the last version of Chrome to support Windows 7, Windows 8, and Windows 8.1 . Chrome 110 (released February 2023) dropped support for those operating systems. Therefore, for users still on older Windows versions, Chrome 109 is the final compatible version. google chrome 109 offline installer
Using the offline installer is dead simple. Because Google typically only promotes the current version