(I would like to see the folders appear at or near the left side when I insert an attachment or a picture or try to open a file in these programs.)
I'm guessing I inadvertently changed a setting (a global setting?) . . . because the folders and their icons used to appear "at the top of the line," readily accessed after selecting File>Open or File/Save.
In my attachment, you can see, as shown by the slider at the bottom, that the folders are at the right side of the window.
I have also tried to fix this, looking for the My Places Bar in the open/save dialogs of several apps, without finding it . . . although I didn't look in all apps.