How can I install a browser or launch a website (Using Raspberry Pi 5)?

I have a Raspberry Pi 5 with Official LibreELEC Version 11.0.04 RPi5.arm. I have Sandmann79's "Browser Launcher" installed and have a website configured. Is it possible to install a web browser like Firefox, Opera, etc. on the RPi5? If not, is there a method to stream a website?