I don't have the SD card that came with my raspberry pi4 kit. I'd really like to have Ubuntu...

1e9c7b8

What's the easiest way to go about reinstalling an os on my raspberry

Scary_Guy

The easiest way is to download an ISO and etch it. I think you can just order one directly from them too:

https://ubuntu.com/raspberry-pi and https://ubuntu.com/tutorials/how-to-install-ubuntu-on-your-raspberry-pi#1-overview I didn't see an option to order a preinstalled SD.

Though if you're just getting it to play with I'd highly recommend installing Raspberry Pi OS which is a little more lean on resources I think. https://www.raspberrypi.com/software/ Or maybe https://ubuntu-mate.org/raspberry-pi/ (unless you plan to run it headless, then I don't think it'll matter much.)