The magnifying glass in the taskbar has disappeared

Hello again and thank you for your reply :-)
I'm sorry, but when I open the window by right-clicking on the taskbar as instructed, I don't see "Search".

Ok, I found it! BUT! It's the magnifying glass for reading texts that we're talking about!!
As for me, it's the file search magnifying glass that I want to put back in the taskbar please.

And here is what I see when I right-click on the taskbar:

Toolbars >
Cortana >
Show App active button
Touch keyboard button
Cascade
Stack windows
Show windows side by side
Show desktop
Task manager
Lock taskbar
Properties

Hello,
No, I'm not in tablet mode!
I clicked on Show the desktop and it displayed the desktop.

This manipulation didn't yield anything.

So, I found a workaround: When I open "My Documents" or "My Pictures" or "My Music", there’s at the top right "Search in:" plus a magnifying glass, and there I type the word or words to find a folder or a file.
That's already something because when you have a lot of folders and files, it's always handy to know how to find them.

There you go, I think we can conclude here because I wouldn’t want to waste your time with this little issue.
Thanks again to everyone for your help and have a good day.
BYE