itch.io

Assuming you're on windows.
Install 7Zip, WinRAR is worthless (This is genuine PC advice)

Delete your current folder of the game, Do a fresh install.
Finish download via browser > RMB in File Explorer after optionally moving it to your preferred destination > Show More Options > 7Zip > Extract To "Game_Name" > Open game directory > Double click on the "Gamer Struggles" application file.

Still doesn't work? Tough luck.