There's nothing to install.
The Tor Browser starts with a double click on the "start-tor-browser.desktop" file in the extracted folder.
All you have to do is extract the downloaded file.
You just download the Tor Browser and extract the "tor-browser-linux64-9.X.X_en-US.tar.xz" file into your "Home" directory.
Open your Command ...
TOR stands for The Onion router. You can see this wiki page which is about Onion routing
Tor is a network which uses Onion routing and Tor Browser is a Firefox which runs Tor at startup and has some privacy protection extensions on it such as HTTPSeverywhere
Amazon, Cloudflare and Google usually aren't a fan of Tor network. Google blocks connections from Tor (sometimes shows a captcha and let it go), Cloudflare keep asking to complete captcha and Amazon as you seen on your Tor browser cancels your order. They detect 3 layer of IPs which is suspicious to them so you can try reaching maximum privacy so they detect ...