So I decided to consult an expert about what's happening on my laptop then he concluded that a hard disk drive replacement is needed so we replaced it and successfully set up the computer. Unlike before, the lags and freezes were gone but when the game was finished downloading I tried playing it and it has 40-60 fps which is bad unlike before wherein I'm having 80-120 fps but at that time my hard drive was still broke, now that it is replaced, the performance of the computer has become better but why is my game having 40-60 fps? How can I fix it and bring it back to 80-120 fps :/