Funny, I'm using Doom Emacs and I just tried Org Mode for the first time, for a simple note (M-x org-add-note); wrote the note and then finished with `C-c C-c`, I have no idea where it went! :) Love it when I push myself to explore a new tool. (The only clue that I have is that the command description says: "Add a note to the current entry".)
Welcome to the org life :)
I don't use Doom, but it seems to have pre-configured location for the default orgmode file, which, of course you can change at will.
ref: https://docs.doomemacs.org/latest/modules/lang/org/#/configu...
Thanks! I'll try reading their manual (or follow some tutorial). For now, I'll be using Org-roam[0], seems to be much simpler [route] to add and find notes and it even comes with first class support for Doom (see "Using Doom Emacs" section)!