Landscape mode in setting app.

I have iPhone 12 Pro. Now why can’t I access landscape mode like my xr can. Also messages is different in landscape mode Both. Same 6.1 screen. setting app on XR but my 12 pro don’t even turn In messages It’s like this setting has the chats to the left and Convo to right On 12 pro there is no side ba

These are xr. With side bar.

these top 2 are 12 pro

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