You're supposed to extract the game from zip file. Once you extracted the folder, look for the application files named either Our Life or Our Life-32.
You may run into a "Do you want to run this program window?". Look for the "More Info" button to access the "Run anyway" button.
Then you wait for it to load and you should be able to see the main menu.
Let me know if this works for you. Because i've played the game with a Windows11 laptop and those instructions may not work for you.