Why does my GUI look different in two different computers?

[DenizMert]

I've recently bought a new computer, and when I installed Adobe Acrobat on it, I realized that it looks much more different than the old one. Both PCs run on Windows 11 64-bit, and both installations are very recent.

First one looks like this:

And the second one(which is unfamiliar to me, I want it to be like the first one) looks like this:

How do I fix this?

[Bernd Alheit]

 

[try67]

What a terrible name for a menu item... It should at the very least mention "layout" or "design" or even "UI".