moving Tool panel to the left in Adobe Acrobat DC pro version

Hi everyone, do you happen to know how to move the tool in adobe acrobat DC (pro) from the right to the left? so bascially, i am trying to get the photo 2 view, instead of the photo 1 view. 

i have tried multiple ways, including disable the new acrobat, reinstall and disable the new acrobat, but it still looks like photo 1. my colleague who also has Adobe Acrobat DC proversion still has the photo 1 view. 

thank you very much for your help.