Latest Acrobat Reader v2023.006.20360 where have the toolbars gone

I have just got a new PC and I have installed Adobe Reader on it but I cannot find the options that I had set on my previous PC (running the same version).

What I am looking for is:

Open new document in another window (instead of a Tab)

Toolbar icons for the various Zoom settings (Zoom page, Zoom width, zoom +/- etc.)

Completely close the sidebars and keep them closed whenever I open Acrobat.

It seems I have the same version running on 2 different PCs (one is Windows 10, the other is 11) but they are presenting a completely different user interface!!

Any help, suggestions would be greatly appreciated

PhilipJ