system
A chat on subreddit /r/wallstreetbets
human
It's fun in a sense that you can play with backtesting whatever indicator and price movement combinations you can think of. I once spent couple month  writing and testing various algos but they were mostly only breaking even. Sounds like you found something better, congrats on that.

gpt
It's just finding a small edge and managing risk very well, Id say managing risk is the most important key part.