Hie, I may like to fix my s9plus?

Hi there! Based on the search results, here are a few options for fixing your Samsung Galaxy S9 Plus: The Samsung Galaxy S9 Plus Glass Screen Protector for R49 would protect your existing screen from further damage. The Premium Grade Lcd Screen For Samsung Galaxy S9 Plus for R3199 is a direct screen replacement if your current one is cracked beyond repair. I'd also recommend taking a look at the ArmorSuit MilitaryShield Screen Protector for R345 - it offers full edge-to-edge coverage and protection while still being case friendly. Let me know if you have any other questions!

Does the screen differs with how many GBs

No, the amount of storage space on your phone (measured in GBs) does not affect the screen. The screen is the same regardless of how many GBs your Samsung Galaxy S9 Plus has. The listing you found for R792 for a Samsung Galaxy S9 Plus screen replacement front outer lens glass screen repair kit seems like a good option to replace just the screen. This should allow you to replace the cracked screen without needing to upgrade your whole phone. Let me know if you have any other questions!