Ordinarily, everyone can see what you are doing online. If you are surfing on a non-secure website, hackers, government agencies, and advertisers can track your location and the type of device you are using to surf.
Advertisers will use this information to send you targeted ads. You can get restrictions from surfing certain web content. The restrictions can come from a school, government, etc.
In such instances, a proxy service is all you need to keep your activities on the internet anonymous. Proxy servers act as a getaway between you and the internet. If you don’t use a proxy service, the details of the websites you visit and all other activities are saved on your computer.