This article covers how to find pre-built OVA files, set up the environment, and start hacking safely. What is Metasploitable 3?
To make sure you get the right setup, are you planning to use: (most common for home labs) VMware Cloud (like OCI)? I can provide the specific steps for your chosen platform. Metasploitable3: Exploit Testing | Rapid7 Blog metasploitable 3 ova download