xfce panels are hidden

Well, I'm a Linux noob and when I installed the 2.8.2 Debian 10 version using the iso file given by the download page, there was nothing on the desktop,  and I didn't know how to unhide them. There must be a panel on the upside and downside of the screen.

I want my desktop to look like this：https://www.tecmint.com/wp-content/uploads/2013/07/xfce-11.jpg

but my screen looked like this:

Does someone help me?

Besides, I'm a beginner in English and don't know how to write in English. If you guys feel offended, plz don't mind.

I have checked it by sending my mouse to the top and to the bottom, but nothing happened.
Also, I have tried to use the Live system on my USB storage device, and got the same result.
And then, I reinstalled the system twice, , , the problem is still there.
Maybe the is something wrong with my hardware.

Fortunately, It does not affect my normal use of Linux CNC. I can still use Linux CNC to control my step motor.

Finally, I found the solution, after devoting my entire day to this.
I show the solution in the picture below.

An offset value of the screen is automatically set after the system is installed, which causes the annoying problem. Set it back to 0, and the problem is solved, eventually.

Thank you for your patience and love you! ! !

LYXHAHA wrote:

I want my desktop to look like this：https://www.tecmint.com/wp-content/uploads/2013/07/xfce-11.jpg
 

I like the mouse background! Is that still available as an option in LinuxCNC?

It reminds me of the startup screen on Heidenhain TNC640, since it's no secret that it's just an application running in Linux on XFCE desktop. In fact, my job programming for and running a Hermle 5-axis mill is part of why I decided to finally start using LinuxCNC at home.

I am otherwise totally new to Linux, and I haven't even bothered to figure out how to change the desktop background yet. I am one of those weird people that usually keep the default desktop background.