You can get to the Taskbar settings from settings, display, navigation bar, and select taskbar at the bottom amongst other things.
Also, in navigation bar you can select left, right for taskbar. If taskbar is turned off you can also select centered.
The screenshot in my post shows that I'm at the Taskbar settings.
I literally said in my post that I only have the option to select left or right. The problem is that I cannot turn off the taskbar. That is what I'm looking for help with.
And if you turn off Taskbar you can center the buttons.