Is there a way to access pages or website's that are not indexed on Google or any other search engines without the use of TOR

Is there a way to access pages or website’s that are not indexed on Google or any other search engines without the use of TOR?
I have heard people say this can be done but is it truly possible?

You can type in an IP address or a URL. Its not special that something isn’t indexed. It just means its either new of irrelevant. You can go direct to them if you know the address.

There are also other darknets like i2p cover on the course.

There is no magic way as your post might suggest.