Clean up terminal misstakes [closed] - bash

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I am new to the terminal and was trying to install Java.
Also attempted to use homebrew, have since uninstalled.
Now everytime I open the terminal I have three lines
-bash: /opt/homebrew/bin/brew: No such file or directory
-bash: nexport: command not found
-bash: nexport: command not found
How do i remove?
Thanks

Answer 1

Find the Cause
First you should find the source of those commands that are automatically executed every time you log in. Usually there are files that are being executed after every login, depending on your OS it can be a bash script like bashrc in your home directory.
So first try to find the file where these commands are executed but fail:
cd ~ && grep -rnw 'nexport'
This should give you the file where nexport is executed like /home/user/bash_profile
If it does not find any file try this:
cd / && grep -nwirl 'nexport' 2>&-
This searches the whole system for nexport and prints all files where it occurs. (the extra parameter il will suppress all access-denied errors)
Same for brew (obviously)
Change affected file(s)
If you found a file, for example lets say its /home/user/bashrc assuming you have rights to write this file
type:
nano /home/user/bashr
to start editing this file using the easy-to-use, mostly preinstalled nano-editor
When editing the file type CTRL+W to start search mode and type nexport and press Enter.
It should jump to the line where nexport occurs. If it's the line you want to remove just go to its beginning and add a #.
Example:
/home/user/bash_rc#line:72
nexport foo/bar
change to:
#nexport foo/bar
to comment it out (always better than removing)
Press CTRL+X to save and try re-login.

Answer 2

When you installed Homebrew and then some of its packages, several configuration files have probably been modified. You need to restore them. Look maybe at /etc/profile, /etc/bashrc, /Users/<yourself>/.bashrc (replace <yourself> by your username), /Users/<yourself>/.bash_profile and /Users/<yourself>/.profile.
How to check? Try something like this:
$ grep -El '(brew|nexport)' /etc/{bashrc,profile} ~/{.bashrc,.bash_profile,.profile}
If something shows up you found the culprit. By the way, did you search the Homebrew documentation for "uninstall"?