How can I add a progress bar for my software?

[buran]

I remember the days when “beginner” was something which didn’t comprise ability to write 1000 lines of code with CLI interface....

well, I don't know if this is the case with OP code, but actually not so difficult to imagine it - e.g. just imagine some huge repetitive if blocks.

@OP: look at https://pypi.org/project/progressbar2/

also Click has built-in progressbar support https://click.palletsprojects.com/en/7.x...gress-bars
I don't know how you created the CLI