Cannot open Favourites folders in Adobe Bridge

I just bought a new iMac M4, & I’m trying to set up my Adobe products. I thought that Bridge would just open the way it does on my old iMac or Macbook, but the interface is very confusing. I put a couple of folders in the ‘Favourites’ panel, but I cannot open them to access the photos. Double click does nothing, & right-click just suggests removing them from the favourites bar. I thought it was to do with the mouse settings, but there’s nowhere in the mouse settings to determine what double or right-click does. I’m going a bit crazy here!

Whatever I try to do it inserts weird panels that I can’t get rid of, or does other stupid things I can’t undo. 

Can anyone help please?