Yeah, Obsidian, Roam, Foam, Mem.ai, or Bear mentioned in next comment.

Obsidian is pretty good.

I started using it but stopped as a lot of note taking for me happens on my phone.

At least that first stage of collecting ore :)

And then actually retrieval also is on a phone.

Refreshing and organising notes is probably desktop only activity so far.

I saw that you are an ML engineer. What AI driven features for app like Obsidian would come to your mind first?