Dear @HAJI
Roblox has specific hardware and operating system requirements, so we can compare your laptop's specifications with the supported requirements.
You can find the official Roblox requirements here: https://en.help.roblox.com/hc/en-us/articles/203312800-Computer-Hardware-Operating-System-Requirements
If you provide the laptop model or specifications, we can check what is preventing Roblox from being installed.
Best regards,
Bence