You only use a minuscule part of the internet.
Most of what people search for is located in the Surface Web, part of the internet easily accessed by search engines. It’s a sliver in comparison to the rest of the web. Everything that isn’t accessible by Google is called the Deep Web which is a much larger section. It houses confidential information like medical records and things that aren’t searchable. Then, there’s the Dark Web which is technically in the Deep Web. You can only access the Dark Web through a web browser called Tor. The Dark Web is not for the faint of heart.