If you applied policies and any of the following are already disabled, ignore it.
chrome://password-manager/settings, disable Sign in automaticallychrome://settings/cookies, enable Do Not Trackchrome://settings/content/backgroundSyncchrome://settings/content/paymentHandlerchrome://settings/content/protectedContentchrome://settings/content/soundchrome://settings/content/siteData to Delete data sites have saved to your device when you close all windows, manually whitelist sites you may needchrome://settings/content/pdfDocumentschrome://settings/onStartup, set to open New Tab