Hi your viewports should be in -y,-z,-x see attached image. You can always try resetting your preferences by removing the prefs folder. C:\Users\username\Documents\maya\2020\prefs remove the folder, restart maya.
Welcome back to Maya.
All the best
David
From a readers' Q and A column in TV GUIDE: "If we get involved in a nuclear war, would the electromagnetic pulses from exploding bombs damage my videotapes?"