An randomizing app to decide who gets to work

I felt it was really hard to create anything even though i was done with cs101 and even done the assessment and getting like 90%.
I don’t know what i could have done more to my app to make it better or how i could have merged it more, cuz i can see it was pretty simple compared with some of the other topics posted in here.
Could you please check it and tell me what more i could have done and if there was a more efficient way to write the code?