Right mouse click in the white space below the Tree View on the left pane of File Explorer and uncheck ‘Show libraries’.
Do want to also hide ‘Network’ your ‘name’ shortcut, Network, Control Panel, and Recycle Bin? Uncheck ‘Show all folders’.
What is ‘Expand to current folder’? Whenever you click further into folders on the right side pane of File Explorer, the Tree View on the left will also expand.