Whatever you do, don't use McAfee. And definitely don't use some other random software you found online no matter what the reviews say. This type of software is always incredibly invasive. There is almost zero reason to give this much power over your system to another third party.
AVs and other "security products" massively increase attack surface (sometimes by literally disabling protections that the OS itself has, but usually by just being buggy and insecure in itself and doing things in obviously bad and insecure ways to be faster) and have been leveraged in so many attacks now that it's truly remarkable that there is zero change in how people think about it.
Boot to Firefox was improved by at least 30 seconds, navigating the file explorer felt much smoother and security was probably improved as well.
For home users, I don't see any reasons to use a third party antivirus nowadays.
RKHunter doesn't look so bad but malware is such a non-issue on Linux if you stay away from wordpress and npm so I don't even bother.