Yes, that’s the problem. You should probably start by downloading the official raspberry pi imager and choosing a distro from there to install to the SD card.
There are other ways to find images and plenty that aren’t available there but that’s the easiest way to get up and running. You’ll probably want to start with the default raspberry pi os and start experimenting with more customized os’s later.
Yes, that’s the problem. You should probably start by downloading the official raspberry pi imager and choosing a distro from there to install to the SD card.
https://www.raspberrypi.com/software/
There are other ways to find images and plenty that aren’t available there but that’s the easiest way to get up and running. You’ll probably want to start with the default raspberry pi os and start experimenting with more customized os’s later.