Alright, i'll be honest and say i expected i just needed to use HxD on the .exe file, but that's not how it works. Then i checked some posts here and there were users explaining how you're meant to use the hex editing.
First you extract the .exe files with a program like Universal Extractor. You'll have a directory with the files extracted from the .exe:
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Use HxD to open the "data.win" file in this directory. Now use search>Go to... and type 08BE0030. The number highlighted in red should be 00, change it to 01. Now save (ctr+s) and close the program.
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Run the Matchmakers.exe you extracted in the folder with all those other files, and you'll now be able to skip minigames in every stage.