Task bar moved from bottom of screen to the side of screen (I can not figure out how to fix this)

Cannot claim it, but can confirm this works:

Close Outlook, and then in the registry editor, navigate to the following registry key…

HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Common\ExperimentEcs\Overrides

Locate the “Microsoft.Office.Outlook.Hub.HubBar” string value and set it to “false“. If there isn’t a “Microsoft.Office.Outlook.Hub.HubBar” string value in this registry key, create a new string value in this location called “Microsoft.Office.Outlook.Hub.HubBar” and set it to “false“.

You can now open Outlook again and you should be able to enjoy your Navigation buttons back at the bottom of the screen again.

I find it poorly designed. I do not use the left side of my screen as often as I do the center of the screen. I also work on multiple screens so going far left or right is inconvenient. What non-office programmer decided that this is the way to go for those of us that actually use the program consistently?

STOP forcing changes that are merely cosmetic to appease yourselves.

Why designers, engineers, developers, etc. decide to not give more flexibility and options to users will always baffle me. I understand new changes are oftentimes hard to accept and adjust to initially, but when arbitrary decisions are imposed onto people regarding layout/cosmetics with regards to UI, it really makes me question whether all neurons upstairs are firing correctly for the folks that are in charge making these types of decisions....

It comes and goes at Microsoft's command. See

https://answers.microsoft.com/en-us/officeinsider/forum/all/outlook-client-no-longer-showing-coming-soon-or/63f15144-bcc5-422b-b24b-4a10b29537da

for details.