One installer - Minecraft 1.21.1, NeoForge 21.1.250, and the Survival RPG server already set up.
Open Elijah Minecraft from your desktop, sign in with your own Microsoft account, and click Play.
You'll need your own Minecraft (Microsoft) account - the installer never asks for anyone else's login. Mods sync automatically every time you launch, so you'll never need to reinstall this to get new content later.
This installer sets up Prism Launcher (an open-source Minecraft launcher) with an instance already pointed at our server's mod pack and address - nothing from your Microsoft account is stored anywhere but your own PC.