Really getting confused

Hello; I am really getting confused and frustrated with FSX Deluxe, I installed it in the default drive and downloaded SP1 & SP2 installed them and they seemed to work. I downloaded some Fsx aircraft 2 worked and 2 didn't show up and the program would stop and windows closed it down. I decided to do a complete uninstall and that worked fine nothing left in the hd. Read up on how to do a clean reinstall and as per recommendation put it in C:/FSX and as an adminstrator, everything seemed to work so I thought try some aircraft, downloaded 2 opensky 777's and 2 cessena 150's the jets didnt show up and the cessanas did. I checked the aircraft.cfg's and they seemed ok. I have my o/s as windows 10. Can anyone steer me in the right direction please. R


