is this working on iOS 15.7?
I'm not find New Private Tab under New Tab on iOS 15.7 on my iPad.
iPad, iPadOS 15
Question marked as
See >>> Turn Private Browsing on or off on your iPad - Apple Support
To access Private Browsing in iPadOS15/16, it is necessary to first summon the Safari Sidebar using the button at upper left of the screen [1] - and from the menu tap the Private toggle button [2].
To return to regular browsing, tap the sidebar n Tabs button (highlighted here in blue), that appears above the Private button. Until re-enabled, Safari will remain in its normal browsing mode.