download netflix on MacBook through chrome browser?

Good find.

Running Windows on a Mac, and Connecting … - Apple Community

shows how to install Windows on a Mac.

2020 and later Macs may be able to use the App like the iPhone or iPad version to download as they are technically compatible with iPhone Apps. I don't have an Apple Silicon Mac to test this theory.

Netflix as far as I know only offers streaming of video. Actual download to view when your internet is down is not available from Netflix.

DMCA also restricts copying of commercial videos to personal computers. If all you mean is the ability to see a video while the internet is working that does work with Chrome, and Safari, but not Firefox on the Mac. That's known as Streaming.

I believe the download option is only available by using the official Netflix app:

https://help.netflix.com/en/node/54816