Google Chrome is a free web browser from Google. It is the most popular browser for desktop and smart phones. In chrome browser, some features send data to Google servers. It maybe useful to you, but if you are concerned about your privacy just disable the features and improve your privacy.
Don’t sign-in chrome with your Google account:
This feature will synchronizes your browser data like passwords, auto fill form entries, your browsing history and some others things to your Google account by default.