So, what is that 200MB file you found on Mediafire? In almost every case, it is one of three things:

Right-click gta_sa.exe -> Properties -> Compatibility -> Run as Windows XP or Windows 7.

The version of the APK file you need depends on your Android OS: : V1.08 Cleo APK Android 7 and above : V2.00 Cleo APK General Installation Steps

What or PC operating system are you currently running?