Stupid interface. No visible way to find document properties

The latest variant of Acrobat Reader has an incredibly cosmically stupid UI. A lot of useful operations a very well hidden. I spent a lot of time trying to figure out how to find a document's propeties. Finally ChatGPT offered the solution: CTRL+D. I wanted to change the color and the size of the drawing tool. No way to find those options. Again ChatGPT helped: CTRL+E. How did these morons manage to hide the app's functioanlity so well?