(9). Use multiple browsers. One for research and sensitive work like online banking, another for shopping (Always use incognito mode while you searching and product on eCommerce), Do not let eCommerce companies or other trackers to know your search history.
(10). Do not use browser extension which offers you discount on products and provide you time to time product sell alert. These kind of extension can monitor your online behavior.
(11). Use incognito mode while searching on google.