Sorry for the late reply. After doing some research I found out that the RAM is the issue because the ARC archive's decompression memory is 4 GB, which is bigger than 3/4 my RAM.
Quoted from FreeArc GUI Docs:
"Pay a special attention to the Decompression memory field, which shows how much RAM will ...

Hi everyone!
I downloaded Company.Of.Heroes.Complete.Edition.REPACK-KaOs , extracted it, and ran the installer but I got this error after around 5 minutes:

https://i.imgur.com/7kvbhUc.png
https://i.imgur.com/N44mWSP.png

I tried:
-Running the installer again.
-Running the installer in Safe ...