Thank you for your kind instruction.
I've tried it, after the 3rd step, it gives me a certain information
up to date, audited 76 packages in 2s
21 packages are looking for funding
run `npm fund` for details
found 0 vulnerabilities
and there's nothing created in that directory
I know nothing about coding, so maybe here's something missing in my system?
I installed Node.js using brew, it should have been installed correctly.