I tried to install Homebrew because I have to install Gnuplot for a university work but I'm ignorant on the topic

[Ncole-png]

Output of brew config

I don't understand how all this works

Output of brew doctor

It's my first time in the world of programming

Description of issue

==> This script will install:
/usr/local/bin/brew
/usr/local/share/doc/homebrew
/usr/local/share/man/man1/brew.1
/usr/local/share/zsh/site-functions/_brew
/usr/local/etc/bash_completion.d/brew
/usr/local/Homebrew

Press RETURN/ENTER to continue or any other key to abort:
==> /usr/bin/sudo /usr/sbin/chown -R nicolecadoria:admin /usr/local/Homebrew
==> Downloading and installing Homebrew...
==> Updating Homebrew...
==> Installation successful!

==> Homebrew has enabled anonymous aggregate formulae and cask analytics.
Read the analytics documentation (and how to opt-out) here:
https://docs.brew.sh/Analytics
No analytics data has been sent yet (nor will any be during this install run).

==> Homebrew is run entirely by unpaid volunteers. Please consider donating:
https://github.com/Homebrew/brew#donations

==> Next steps:

• Run these commands in your terminal to add Homebrew to your PATH:
  echo >> /Users/nicolecadoria/.bash_profile
  echo 'eval "$(/usr/local/bin/brew shellenv)"' >> /Users/nicolecadoria/.bash_profile
  eval "$(/usr/local/bin/brew shellenv)"
• Run brew help to get started
• Further documentation:
  https://docs.brew.sh

(base) nicolecadoria@MacBook-Air-di-Nicole ~ % echo 'eval $(/opt/homebrew/bin/brew shellenv)' >> /Users/homefolder/.zprofile
eval $(/opt/homebrew/bin/brew shellenv)
zsh: no such file or directory: /Users/homefolder/.zprofile
zsh: no such file or directory: /opt/homebrew/bin/brew
(base) nicolecadoria@MacBook-Air-di-Nicole ~ % echo >> /Users/nicolecadoria/.bash_profile
echo 'eval "$(/usr/local/bin/brew shellenv)"' >> /Users/nicolecadoria/.bash_profile
zsh: permission denied: /Users/nicolecadoria/.bash_profile
zsh: permission denied: /Users/nicolecadoria/.bash_profile
(base) nicolecadoria@MacBook-Air-di-Nicole ~ %

This is the code that appear me after the installation. I cannot run the commands on the terminal because there is "no such file or directory"?
I apologize in advance for my English, but I seriously need help and I don't understand how all this works

[SMillerDev]

(base) nicolecadoria@MacBook-Air-di-Nicole ~ % echo 'eval $(/opt/homebrew/bin/brew shellenv)' >> /Users/homefolder/.zprofile
eval $(/opt/homebrew/bin/brew shellenv)

Why did you run this? The output you pasted tells you to run these 3 commands:

echo >> /Users/nicolecadoria/.bash_profile
echo 'eval "$(/usr/local/bin/brew shellenv)"' >> /Users/nicolecadoria/.bash_profile
eval "$(/usr/local/bin/brew shellenv)"

[Ncole-png]

I mean, I'm really ignorant about it ahahah
I should write "whoami ls -la /Users/nicolecadoria/.bash_profile" and then press send?

Because this is what comes out:

whoami
ls -la /Users/nicolecadoria/.bash_profile
nicolecadoria
-rw-r--r-- 1 root staff 447 6 Ott 23:35 /Users/nicolecadoria/.bash_profile
(base) nicolecadoria@MacBook-Air-di-Nicole ~ %

[carlocab]

Do sudo chown $(whoami) /Users/nicolecadoria/.bash_profile (this will ask for your password) and then try

echo >> /Users/nicolecadoria/.bash_profile
echo 'eval "$(/usr/local/bin/brew shellenv)"' >> /Users/nicolecadoria/.bash_profile
eval "$(/usr/local/bin/brew shellenv)"

again.

[Ncole-png]

I did it and nothing comes out
is this right?

(base) nicolecadoria@MacBook-Air-di-Nicole ~ %
sudo chown $(whoami) /Users/nicolecadoria/.bash_profile
Password:
(base) nicolecadoria@MacBook-Air-di-Nicole ~ %
echo >> /Users/nicolecadoria/.bash_profile
echo 'eval "$(/usr/local/bin/brew shellenv)"' >> /Users/nicolecadoria/.bash_profile
eval "$(/usr/local/bin/brew shellenv)"
(base) nicolecadoria@MacBook-Air-di-Nicole ~ %

[carlocab]

Yes that's fine. You should be able to run brew doctor now, which should hopefully say Your system is ready to brew.. After that, run brew help to see help text on how to use brew.

[Ncole-png]

Thank you so much!