[mothered]

isn't Tor the safest one out there that's known?

It depends what you mean by "safest". 

Generally speaking and In a nutshell, protecting yourself online comes In three forms:

* Privacy (not being able to "see" what you're doing).
* Anonymity (not being able to "Identify" you).
* Lack of uniqueness (being part of the "majority", not minority).

It takes a lot more than a web browser to achieve all the above In It's entirety.