I have tried a bunch of things, but I've ended up just using markdown files structured into folders on a cloud drive. I use whatever editor I fancy at the time

I have tried a bunch of things, but I've ended up just using markdown files structured into folders on a cloud drive. I use whatever editor I fancy at the time and use git to version/back it up. All the things I thought would be nice with note taking apps I just found I didn't really need. There's usually a simple way of doing it inside a file. It's easy to add code into subfolders, pictures, scripts, etc, if needed. Mostly however, all I ever need is text editing and keeping to a reasonably standardized markdown notation