The World Wide Web is designed in such a way that to use many services, you must provide your data. For example, a Google account is needed to download applications from the Google Play store. If the user wants complete anonymity, he will have to sacrifice many opportunities. How to erase traces of your presence on the Internet?
First of all, you need to delete accounts in social networks. This cannot be done instantly. So, after submitting an application in the Facebook profile settings, its owner will have to wait 14 days until the page disappears. In order for the photos in which the user was tagged to disappear, you need to contact the social network support and report that there was no consent to publish. With VKontakte, everything is a little more complicated. Here, after applying for page deletion, you will have to wait about a month. However, this time can be spent usefully by manually destroying traces of your presence on the social network. To do this, you will need to delete data about yourself, as well as your comments in discussions. It will also be useful to revoke your “likes” under photos and posts. Data on what and where the user "liked" can be found in the "My bookmarks" section. If the user kept records on Twitter, you can simply delete the profile in the settings. But the tweets will disappear from the search results only after a certain time.
As for the Google+ network, the user has a choice. He can delete only his social profile (if he created one at all), or completely destroy his profile in Google. But in this case, access to e-mail and other services linked to this account will also be lost.
In general, there are many sites where the user had the opportunity to "leave a trace". So, to find information about yourself, you can use special services for "cleaning" data. For example, the accountkiller site maintains lists of resources and monitors their loyalty to the destruction of user data. Sites that do not allow you to delete a record about yourself are blacklisted. Resources that delete all data on the first request are whitelisted. If only partial data deletion is possible, the site is graylisted.
Having finished with social networks, you need to find information about yourself using regular search engines. If there is data somewhere, you can try to delete it yourself or contact the site administration. To maintain anonymity in the future, you need to use not one login for different sites, but several. If a user uses the same nickname when registering on various thematic forums, anyone can always track his circle of interests. In addition, with a repeated login, it is enough to carelessly leave your real data somewhere just once to give yourself away. You can also delete unwanted information from open sources or databases. But this is a paid service.