Hello, Sia Sadeghi.
Unfortunately, it's not about processor power, but whether it has the hardware features that are necessary for Windows 11 to work properly. According to data from Microsoft, Intel processors have this set only of the 8th generation and newer. At one time, I also had to upgrade my PC to upgrade to Windows 11. Due to the fact that the processor does not meet the requirements for the new OS, Microsoft does not recommend updating. But it doesn't forbid it either. Moreover, in the help for early builds of Windows 11, Microsoft even published a way to bypass the processor check, but then it was canceled. For more information, see here: https://support.microsoft.com/en-us/windows/windows-11-on-devices-that-don-t-meet-minimum-system-requirements-0b2dc4a2-5933-4ad4-9c09-ef0a331518f1
and
You can try to install Windows 11 cleanly (rather than through an update), but this will be entirely at your risk (it is quite possible that Windows 11 will not be installed, and all data from Windows 10 is lost).