I need someone to be able to increase the scalability of the demo app

I have already installed successfully the demo app onto my website, it’s working good. The purpose of using mediasoup is not for video conferencing but for multi host live streaming.
I need support who can make consumers ( who doesn’t produce) to not get multiple streams but a mixed stream so that it works somewhat like mcu. Its okay for the co hosts to use sfu infrastructure. I need my each simultaneous live streams to be able to be watched by thousands of consumers without any lag and freezes.
Can anyone help me with that? Preferably a good hand over mediasoup is needed.
Contact me here or email me at mutant.sayam@gmail.com