If you have a Mac equipped with an M1 chip then you are best advised to install HomeBrew.
Open terminal and paste in the following command string:
/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
Now install cocoapods using the following command:
brew install cocoapods
I believe that you can also install cocopods on an Intel Mac the same way but I have not attempted that myself so I can’t be sure that it will work.