The biggest selling point of Arrow OS 13 is its efficiency. Because the ROM lacks heavy Google dependencies in the Vanilla build, it uses significantly less RAM than stock or Pixel Experience.
To help you get started with the installation, could you tell me: specific device model are you using? Do you already have a custom recovery (like TWRP or OrangeFox) installed? (with Google services) or the Vanilla version (de-googled)? I can provide a tailored guide once I have those details! arrow os 13