Just reinstalled Microsoft Flight Simulator for 11 whole hours and the missing package popup is still showing, so reinstalling doesn’t work, DO NOT waste your time on trying to reinstall the game.
I tried the ‘delete a small file at official folder’ trick and I made it to the main menu, but when it comes to the freeflight mode, the FLY button doesnt work (its not grayed out, its on the clickable color, but its not doing anything.) but the missions work (like what am I gonna do with those missions anyways)