OK, here's some general advice anytime you're running into issues with literally anything. It could be your car having an issue, a program, a game, a machine, and so on.
DETAILS MATTER.
Just saying "it broke, how fix?!?!" is useless. When giving info for bug fixing what happened, how it happened, what you were doing before / when it happened, and so on are literally required actually to figure it out.
In this case, things like what operating system are you running the game on? What's the hardware? Is there any error message? Did you extract the game files? Did you try to install any mods? Did you put the game files into the default windows / programs folders (windows often doesn't like that)? Have you tried updating / restarting your computer? If you have an older / lower spec system, have you tried closing other programs?