zdnet[.]com/article/how-to-use-tor-browser-and-why-you-should/
The TOR browser uses the portable version of Firefox, so after using it there's a bare minimum of traces left on your device. It's also the principle method [AFAIK] to access the dark web [ wikipedia[.]org/wiki/Dark_web ] so you may come across some negative references etc. To *try* to ensure privacy your web traffic is routed through multiple non-logging proxies to better hide your IP address -- the reason for using the word *Try* is that gov law enforcement agencies have commissioned universities to try and break that anonymity, it's believed with some success... the TOR site suggests you might have better luck preserving your anonymity using the browser at times of peak usage, making it more difficult to match the time you make a request to the time whatever site responds. While the TOR browser uses a setup file, it just unzips the needed files, rather than going through a normal setup routine -- the browser's setup can optionally add the browser to your Start Menu, and adds a shortcut to run the browser in its folder, by default "Tor Browser". You can copy that folder anywhere, but of course that shortcut will no longer work.
Seriously, if you want to truly protect your privacy and security online, Tor Browser is the only way to go. No other browser can match it and you shouldn't even bother trying to get your current default to match what Tor delivers.