Installing Angular without admin rights, how?

Question

Node.js

Comrades, I ask for your help.
During working hours, I want to start learning Angular,
but I don’t have administrator rights on my working computer, so I can’t install anything.
I found Nodejs and npm in the portable version, i.e. zip archive,
but when installing from npm Angular using the command: "npm install -g @angular/cli"
gives the following error:
"npm ERR! network This is a problem related to network connectivity.
npm ERR! network In most cases you are behind a proxy or have bad network settings.
npm ERR! network
npm ERR! network If you are behind a proxy, please make sure that the
npm ERR! network 'proxy' config is set properly See: 'npm help config'"
Is there a workaround that will help the knowledge of the frontend? )