Problem was, I would often forget to write things down, or naively think "that was quick to find out, don't need to write it down", which is a classic mistake of confusing post-facto mindset with pre-facto.
So now when I wonder how to do a thing, I first write down in my notesfile what my question is, so when I do resolve it I go and write down the answer to satisfy my need for closure.
I make a new markdown file for every program / VPS login command (the entire SSH command with custom ports), and really anything which I know I would need to search through bash history down the road to do it again.
Those files are sorted into a handful of folders which allow me to quickly find all these programs / commands quickly.
And many times, even years later, when I google the answer, I google my name, stackoverflow, and the topic, and kapow - answer received :D