Can I send ETH to Metamask using Optimism?

Could you please clarify for me if it's possible to transfer ETH to Metamask via Optimism? I'm a bit confused about the interoperability between these platforms. Is there a specific process I need to follow? Do I need to have any additional settings configured in Metamask? And, just to be sure, is there any fee involved in this transaction? I'd appreciate it if you could provide a step-by-step guide on how to accomplish this, as I'm still getting used to the intricacies of cryptocurrency transactions. Thank you for your help!