AWS Amplify CLI installation issue

Hey everyone! I have a problem trying to install Amplify CLI. I've tried following this guide:

https://docs.amplify.aws/cli/start/install/

I've used this command on my Mac

curl -sL https://aws-amplify.github.io/amplify-cli/install | bash && $SHELL

and after it runs, it does say

Download complete!
 Extracting binary...
 Extraction complete!

Successfully installed the Amplify CLI.
Run 'amplify help' to get started!

But when I do run amplify help, it just says command not found.

I do have the prerequisites, Node.js and npm installed, and their versions are v18.14.0 and 9.3.1

I also tried using the npm install in that guide above, got EACCESS permissions resolved by following the link, and when I tried installing it with npm again, I'm only getting a message that says

changed 26 packages in 17s

but am not able to install Amplify CLI.

I'd appreciate any help!