installing windows 10

Your MacBook Air likely does not have sufficient RAM to run a Virtual Machine guest, and that guest cannot be an Intel architecture version of Windows 10 on an Apple Silicon (M1/M2) MacBook Air. If this is an Intel architecture Air, neither we, nor Apple support a dual-boot Windows/macOS installation.

If this is an Intel Mac you would need to use an app like Parallels and then install Win10 in that app. If you have a Silicon Mac then you would need Win11 ARM version and Parallels