Unable to publish my game

Hello everyone, I have made a game using python and converted it into an EXE file. My program requires an addition folder named as Assets and so make my program work I always have to keep my EXE file and the Assets folder in the same folder. Now I wanted to publish my game to Microsoft Store and even completed all the necessary steps required like- payment, etc. But when it comes to upload my game to finish with publishing then I face a problem that I can only upload my game which is in msix,msixupload,xap etc, but my game is contained in a folder and if I convert my game into a msix format then the required folder(Assets) would be missing and my game wouldn't work. So I either have to convert the folder main folder in to a msix format or any other supported my microsoft or find our any other way. Your help will be appreciated.