@TedStriker4104 I am sorry to hear you are experiencing this installation issue.
Sometimes I have found that when a particular package gets stuck on installation it needs a bit of kick start to get going again.
What has worked for me in the past is to identify the package that is causing installation issues.
I then exit MSFS when this issue arises and browse to the package installation folder.
Default location:
MS Store:
C:\Users\Username\AppData\Local\Packages\Microsoft.FlightSimulator_8wekyb3d8bbwe\LocalCache\Packages
Steam:
C:\Users\Username\AppData\Roaming\Microsoft Flight Simulator\Packages
I then delete the partially downloaded packages.. from your example it would seem to be microsoft-airport-lsza-lugano
The files should have extensions like .001, .002 etc after them.
I then reboot the computer and re run MSFS and that often corrects the issue.
I would also suggest that it would be a good idea to install the packages in a custom location rather than the default. Information on how to do this is found here.