File Explorer – prevent folder increasing

In File Explorer, I click on a force within the left panel and the folders robotically make bigger. How do I prevent that?

I need to click on a force and simply see the folders in the best panel. No growth within the left panel except I choose to click on the “+” icon.

I’ve Googled endlessly making an attempt settings and regedit adjustments. Nothing seesm to forestall them from increasing.

I do know this can be a Win 10 discussion board, however unintentionally any individual may be able to advise about Outlook 2021. In the left navigation panel on the backside, there is a menu bar with shortcuts. How do I am getting that bar to vanish altogether?