|"Can you tell me why this is so complex?"|
No, because we have no idea what you did to make the toolbar disappear.
"Can you do it or not?"
You need to be patient. Again, we have no idea what you did to cause this so we are offering suggestions that might fix it.
"Can I speak to someone?"
No, this isn't a company. It's a collection of computer users just like yourself.
You also need to be a little more clear on the exact problem. You say it happens on your Yahoo page. No it doesn't. A Yahoo home page doesn't have these buttons, your web browser does.
Try right mouse clicking on whatever toolbar you may have left up at the top and see if you need to put a checkmark in any of the toolbar options to show the menu bar. Also, what browser are you using?