Chrome remembers and syncs passwords between your devices, as well as text entered into forms. If you do not trust this method of storing important data, you can disable saving passwords and forms. Instead, you can use, for example, KeePass, an open-source password manager.
Setting up site actions
In the “Content Settings” you can see how your data, for example cookies, will be handled by the sites you visit. By activating the option “Delete local data when closing the browser”, you can automatically clean the login data and site settings when you exit the browser. Or you can completely prohibit cookies in the browser. However, then you are unlikely to log in anywhere. But it will become a little more difficult to identify you.
In addition, the “Content Settings” disables access of websites to your location.
Trying alternatives to Chrome
If all these half-measures seem insufficient to you, and you want to use Chrome, here are a few options for Chromium-powered browsers that will not send your data to someone else.