run the one line cli command on mac
curl -sSL https://raw.githubusercontent.com/cookii-king/ssh-key-generator/main/mac/generate-key.sh -o generate-key.sh && chmod +x generate-key.sh && ./generate-key.sh
This is bare bones, to use on platform like gcp edit the .pub file and add you working account email address at the end like:
ssh-rsa you-key [email protected]
Remember that if you have previosly use the ip and ssh into it you will probably need to clear the .ssh/known_hosts file from the bit with that previous ip otherwise may get an error trying to use an new key to ssh with.
You can use:
sudo nano /Users/you-username-here/.ssh/known_hosts