It is showing error code 4?

[10/8/2023 18:42:17] [INFO] Launcher version is up to date
[10/8/2023 18:42:17] [ERROR] Failed to find the game please launch it. Report this if the issue persists code 4

You may start manually, either by using Steam (if you have bought it there) or by starting the .exe from where the game is saved on your pc.