How do we bring out the command line on Android phones ??

Via the Termux app, is one way.

Thanks 😊😊...... Looks very complicated 😄😄😄

It is a single-click install, and then this should help start off as a first time user:

And this video may speed things up too.

But yes, there may be simpler options out there.

I use termux and I've never had an issue. I've even copy a private key from my computer to my phone through the internet so I can ssh into my server.