I'd been scrolling throught the posts and many were about: "I can't open the game, I have to use WinZip or so but I do not wanna!" 

Use 7-Zip pls.

https://www.7-zip.org/

It's the same as WinZip but FREE and OPENSOURCE.

Hope that helps

I tried using 7-Zip, But whenever I open the game files it says that the file is missing. Any help please? 

(Sorry if there's something obvious I need to do, I'm just dumb-)