Installing window 10

If this is an Intel MacBook Air, then save yourself enormous grief and isolate Windows 10 from the rest of macOS. Either by use of Apple's Boot Camp, or as a Virtual Machine guest using the free VirtualBox, or paid versions of VMware or Parallels Desktop. Installing Windows 10 to replace macOS is not supported by Apple or these communities.

If you have an M1 MacBook Air, then there is no means to install Windows 10 as the Intel architecture Windows 10 will not run on Apple Silicon (arm64) hardware. Not even in a Virtual Machine as a guest.

As an aside to you original question.

Is the user profile accurate MacBook Air 13″, macOS 11.5 ?

There have been several update to Big Sur with the latest version 11.6.2 being released Dec 13, 202.

A Time Machine Backup  is very useful and can be used to Revert to Previous Working macOS.

I was trying to install it but this is what I was getting on my Mac

Because it is a M1 Chip Mac. Boot Camp and Windows will not work on a M1 Chip Mac.