Hi, thank you for reaching out. I’m happy to help.
Windows 11 processor requirements start with 8th-generation Intel processors and a few 7th-generation models. Unfortunately, your device uses a 6th-generation processor, which is not included in the list of supported processors for Windows 11.
List of supported processors: https://learn.microsoft.com/windows-hardware/design/minimum/supported/windows-11-supported-intel-processors
Microsoft has announced a 1-year security extension for eligible Windows 10 devices. Please see the Extended Security Updates (ESU) program for Windows 10:
https://learn.microsoft.com/windows/whats-new/extended-security-updates