what to do

[Mary]

not sure why this is happening in any of my apps that have lists/ When i click on the scroll bar which i do not want i a in explorer but got i see the apps on the right and the left hard to explain ill try to show if i can , I am no windows 10inexplorer on the left we see quick menu and either this pc or computer. when i click on say an app from the scroll bar it shows up on the left as well never did that before to my knowledge. i tried to copy it but could not. Like say i clock on for instance Internet explorer it is se on the left like normal but the i see it again on the right. now this is weird for some reason every thing comes up in Drive D the way t was fixed. any way is there a way to fix it sending photo and you can see whats on the left and as i use the scroll bar it also shows up on the right

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also how do i hide the status or the click down bar there

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or what ever you call the side bar on the right that you click on to scroll down