Firebase database control NodeMCU ESP8266 and LED

I need to control the LED (ON/OFF) via the Firebase database using NodeMCU ESP8266. I followed a website and attempted to implement it step by step, but encountered several errors with the libraries. Therefore, I require a well-written code and compatible libraries. Additionally, if possible, could you upload this code to your NodeMCU and provide a brief video demonstration?

Please note that I will only award this project upon successful completion and verification of its functionality.

Reference
https://how2electronics.com/led-control-google-firebase-esp8266/

I need the NodeMCU code
Appropriate libraries
and a demo video.