I want to learn how can we higly compress a file. I have downloaded files whose compressed size was 4 gb and after expanding they became 10GB file. So

• Which software I need to use for such high compression?
• Will I lose quality of the data by compression?
• If you direct me to Winrar or 7zip, please tell me how can I higly compress a file cuz I have tried compression with it but the size was reduced just by few MBs.

I am compressing games like .exe files.

Thanks