X-Plane isn’t as user friendly as MSFS but it’s worth perservering. The flight model is far superior.
X-Plane makes no registry entries at all. If you’ve downloaded an aircraft then simply pop that aircrafts folder into the X-SystemAircraft folder and it’ll be there on the list of choices.
Top tip: If x-plane goes screwy on you with joystick axes or whatever, simply delete the .prf files from the preferences folder and she’ll start back up as new.
There’s a lot you can do with x-plane, and it’s well worth joining the x-plane-tech list as advertised at x-plane.com
Roy.