Does MacOS need antivirus protection?

Are Mac systems immune to viruses and malware?

Do I need to install software to protect macOS just like we do for Windows?

Most, but not all, Mac virus protection is there to stop Windows viruses being spread further.

That doesn't mean Macs are immune - there are viruses/trojans/malware targeted specifically at Mac users.

Shlayer is a recent example, but not the ony one - check the table on the linked page.

There are also fly-by attacks & social engineering/phishing attacks that you always need to be aware of. Shlayer's attack vector is usually a simple "Your Flash Player is out of date! Click to update." Click to download, click to install & you just invited it in.

After comments…
There is no single authority on which antivirus is best, but there are sites which test [for a fee] various competitors in this field. If you just Google it yourself, you will get a thousand hits pretending to be advice, but actually just sock-puppets selling their own 'solution' with no authority but their own.

The only authority I know to be 'trusted' is AV-TEST who keep tables of current antivirus products by OS, for business & home users. The most current Mac page is always at https://www.av-test.org/en/antivirus/home-macos/.