A6150, installation in MAC OS doesn't work

> I followed the procedures from Manual, [...]

   Which "Manual"?

> [...] downloaded software for MAC OS installation [...]

   Version?

> [...] it keeps giving me an error, saying [...]

   Exact message text?  A Web search for that might lead to some useful
information.

> [...] My mac OS is Big Sur.

   I have no actual information, but I would not be amazed if Apple has
(again) tightened the restrictions of its macOS System Integrity
Protection (SIP), and the (old) installer now fails to comply.

   You could test that hypothesis:

      https://developer.apple.com/documentation/security/disabling_and_enabling_system_integrity_protection

   You might find better information sooner in a more appropriate forum:

      https://community.netgear.com/t5/x/bd-p/home-wifi-adapters

Check for earlier messages.

Search - NETGEAR Communities – Big Sur

For example:

A7000 won’t install on Mac OS Big Sur - NETGEAR Communities

Apple likes to make life difficult for people who buy other brands of kit.

You might get more help, and find earlier questions and answers about your hardware, in the appropriate section for your device. That's probably here:

WiFi Adapters - NETGEAR Communities