Can't run Google Chrome on macOS Sierra
If you just deleted the app from the applications folder there may be some remnants hanging out in other places like pref files and other places in the ~/Library/Application Support folder.  Try downloading an app like AppCleaner
http://freemacsoft.net/appcleaner/
Drag the app onto its window and it will find the associated files for Chrome.  Then hit the delete button, and then re-download Chrome and try it again.  Hope that helps.