If you want to insert an image in an org file, drag-and-drop usually works, although the default UX isn't good (e.g. images show in its native size until you set a "#+ATTR_ORG: :width 600px" header above the image).
Here's an easy way to add images https://github.com/abo-abo/org-download
Sadly, the combo of (rich optional) text, easy paste in pictures, inking, file embedding, easy linking, open file formats / all in a sqlite file you can sync / stick on a flash drive, that runs on Windows/Android/Linux/maaaaybe web is just not there yet that I can see.