Do you need antivirus on Linux?
I've been using Linux as my primary operating system since 1997 and I have never installed a desktop antivirus solution on any computer. The only exception to that rule has been when I deploy a Linux mail or file server, where I might add something to scan for suspicious email attachments of malicious code within files. But that's server-only (which is a different beast altogether).
As for the desktop? Never. Not once.
Guess what? After over two decades, I've not experienced one issue with viruses or malware on any Linux desktop I've ever used.