I recently bought a Raspberry Pi Pico to play with, and am attempting to upload my first program to it the Arduino way, as my own operating system rather than a c++ program over an existing operating system. I have not found any record of people hacking it like that - is it possible? If so, how would I go about it? Sorry if this is in the wrong Stack Exchange.

I recently bought a Raspberry Pi Pico to play with, and am attempting to upload my first program to it the Arduino way, as my own operating system rather than a c++ program over an existing operating system (meaning to replace the built-in Raspberry Pi Pico operating system which runs MicroPython, not in the sense of running Linux, Windows, Mac, or any derivative or fork). I have not found any record of people hacking it like that - is it possible? If so, how would I go about it? Sorry if this is in the wrong Stack Exchange.