Malwarebytes, while an excellent product, is in no way a substitute for a full security suite. Subject matter experts all over the place take great pains to emphasize this:
Malwarebytes Free review | Tom's Guide
I use and like Malwarebytes Free (and know about premium), but, in the words of a Quietman7, a computer security expert on BleepingComputer.com who's got a great reputation, says of Malwarebytes 3.0 and later, "can be used to replace your existing anti-virus or serve as an adjunct anti-malware solution since it lacks some constructs that a traditional anti-virus application employs."
Anything that lacks some constructs, and particularly some of the most recent ones in Windows Security, that Malwarebytes does means it should be an adjunct, not a sole primary, protection.
Brian - Windows 10 Pro, 64-Bit, Version 1909, Build 18363
The purpose of education is not to validate ignorance but to overcome it.
~ Lawrence Krauss