I Coated this in detail in my new write-up Arms-On: Kali Linux over the Raspberry Pi 4. Fundamentally you just obtain the Kali Linux ARM Picture for your Raspberry Pi, copy it to the microSD card, and you're ready to go. You don't really have to go from the installer https://www.instagram.com/tantramantraaurvigyaan/p/C9flC7WonWw/