These days, the only question I have to ask myself is "in what context do I want to rediscover this note?". For example, I don't usually sit around thinking: "Didn't we discuss this SSH-related problem with Jeffrey and Anna back in May? Let me go to the may-2024 folder of my notes and grep through them...". Instead, I would just go to either of these notes titled: 'ssh' or 'Jeffrey' or 'Anna' and search for backlinks, where I will surely find my notes related to that discussion, even if they're spread out across multiple days and many notes in multiple places. And it doesn't really matter where specific notes are - which file, what nested hierarchy of headings, etc.
Zettelkasten really does work. You just need a quick an easy way of cross-linking different notes. I highly recommend this little book called 'How to Take Smart Notes', it's fairly small, you can go through it within an hour or so. And remember the famous quote of Richard Feynman: "Notes aren't a record of my thinking process. They are my thinking process"... If you don't find a good way of taking notes, you won't be doing a good job of thinking.