I have an antivirus. Do I need a better one?
Most likely, no.
It is like a seatbelt in the car. Not having one is really, really bad. But once you got it, it doesn’t matter much what it is made of, or who installed it in the car.
There is an even better way to avoid malware. Don’t click on suspicious links, don’t download stuff you don’t know, don’t install apps you don’t need.