No control of width of SideBar on iPadOS

I have no control with the space on iPadOS. iOS is go away so that is no problem but on iPadOS is seems to use about a third of the screen and stays visible. This give unused padding on both since of the data in it used for selection. This leaves tons of wasted space I want to use for the list on the rest of the screen. I use and frame and overlay around the Data in the side bar and see unused space on both sides and big as my side bar I want to reclaim that space for the view on the other side of the screen in iPadOS. The space is currently waisted and just blank padding! All examples I looked at do the same thing when running. Its is no problem on desktop, laptop since the size there is not as limited. I can not build Muiltiplatform like I want without a solution.

No control of width of SideBar on iPadOS
 
 
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