@vint You can poke around other similar posts for Anti Virus...
https://www.linuxliteos.com/forums/search2/1st so you know this will be a can of worms question -- cause Linux is more secure than Windows firstly...
2nd Antivirus and Malware(adaware etc) scanners may be combined but are at times different applications.
In this case, ClamAV is antivirus (i.e. Norton/McAfee/AVG) and Malwarebytes is Malware scanner....
In Windows I would use BOTH...
Now whether or not you need one...
My 2 cents are something is better than nothing... A decent firewall (even the software one in LL is fine) for sure.
On my Windows I run both and scan on schedule...
On my Linux 1 out of the 4 has ClamAV installed, the one that would do any random downloading, I may scan as needed/wanted. And any Chromebooks (also Linux kernel) don't have anything.