Hi Liyana!
Regarding the comments, I’m writing an answer.
The upper screen is difficult to replace! While you are working at it, check the game card reader to see if any pins are bent. If this is the case, it’s for the best to replace it. Otherwise clean it! This can solve the issues you are having.
Guide for the game card reader: [guide|72243]
Upper screen replacement guide: https://youtu.be/QQM4f5tICug?si=HdshAWLDSEc9nbh_
Good luck with the repair and please let us know how it goes!