Well… you can. But…
Due to GDPR the use of Free (Gmail/Hotmail Etc) Email services is to be discouraged. This is because they often lack security features, which are provided to us through our Google Workspace Platform. It also means if there was a Subject Access Request request, you would have to provide access to your personal emails.
We are unable to setup forwarders from the administration portal of Google Workspace but you can follow the guide below to setup your own forwarder.
Setting up a forwarder
You can follow these instructions (https://support.google.com/mail/answer/10957?fl=1) to setup a forwarder from your Google Workspace account.