I hope you are doing well.
You can go to Tools->Customize and at the bottom of the Toolbar tap there is a "Reset to default". That will take care of your toolbars. The Options tab has Resets for menu customization.
For your Command Manager flying in space, you will see 3 regtangular boxes when dragging it around. As you drag it, it will snap in place when your mouse cursor is above one of the boxes.
Only other way I know if getting everything back to day one will be to reset through the registry, but I am not sure if you want to go there unless you are familiar with editing the registry.
I hope you find this helpful.