Do you let people you cannot trust access your physical box? If not an antivirus is not really needed. Only a very small number of exploits over the years did not require actual physical hands on and root credentials to install. It has to be rooted.
I have tried Clam AV several times hoping it would get better but it hasn’t. It breaks my machine every time I have installed it.
My personal Linux boxes are all inside my home. No visitors. Secure network. The clamAV runs on the Fedora box next to the router. That one is up 24x7. The others are booted as needed.