I’ve installed Unity in my laptop, I have a mac, and there aren’t any packages to import on it, why is that?
What are you trying to import? Are you referring to custom packages, or the default packages? From the asset store or from your drive?
Normally you choose at the installation if you want the Standard Assets included. So if you didn’t select them they are not available.
You could run the installer again and just select the Standard Assets, then they will be installed.
You can also import them from the Asset Store by searching for “Standard Assets”: