I can assist somewhat with running ntrip server on linux on a pi with my systemd start script. But that presupposes some linux knowledge. ntripserver has to be compiled from source. I don’t have the time and resources to make a ready-to-go SD card image for the Pi, which would be nice. I guess another avenue to explore is to reach out to @Stefan regarding his RTK Base Raspberry pi base station. He might have the means of modifying his existing image to do what you want to do with just an SD card image to boot on the Pi.