No, using the Fly app editor on a computer isn't possible & even if it is in some way with various emulators, you're better spending that time learning a real editor with much more possibilities.
I recommend that you try the free version of Davinci Resolve ... it's free forever & only lacks some functionality compared to the paid "Studio" version.
Go here & download it -->
DaVinci Resolve 18 | Blackmagic Design
scroll down on the page and here you have the download ...
On the next screen you go with either of these 2 ...
When they want your name, address, email & such ... you can just fake, once all is filled in you can download.
This editor have it all & can be somewhat overwhelming to begin with... but take it in smaller steps, YouTube is littered with tutorials which going through cutting, joining clips ... color grading, adding music & on and on. If you have an idea about what you want to do with your video ... just search YouTube for a tutorial.