Philip created this video for setting up your own solo pool, but it was not for Pi OS per se:
https://www.youtube.com/watch?v=dAa6PkVN-3oCheck for updated README-SOLOMINING instructions on the ckpool git repository, as it shows how to configure it for bitcoin core versions 28 and later.
Thanks CK.
I did come across that readme file and tried my best to read it. It's far too hard for me to follow as I have zero experience with coding/linux. This whole set up is purely my personal interest and my way of contributing to bitcoin's decentralisation. My node has been up and running for a week now, which I'm really stocked about. would be nice If I could set up my own mining pool on it too. I will keep trying...