.zshrc/-zsh Flutter Installation (zsh: command not found: flutter)

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This seems to be one of the easiest way to install flutter with .zshrc in terminal (Currently on macOS Monterey)

It also works if you received the following error:
zsh: command not found: flutter

So the correct way is to add to .zshrc by typing vim ~/.zshrc

PATH="$PATH:$HOME/Flutter/flutter/bin"

or

export PATH="$PATH:/YOUR_FLUTTER_DIR/flutter/bin"

then run source ~/.zshrc or just open a new terminal window

Original source from stackoverflow