I bought the game on steam and it hasn't worked on my windows 11 pc. I tried doing what you said up here but it didn't fix it. I refunded the game on steam and bought it on Itch but it still doesn't open.
There's no error message, you just double click on the game and it doesn't do anything?
If you go to the installation folder (where the executable is), do you have a log/crash file that you could show me? It's usually under [GameFolder]\MOTHER\Saved\Crashes
Also, make sure your antivirus isn't blocking the game from launching.