Oh contrare mon frare. They are extremely easy to avoid if you have any common sense. Don't download and run just any old exe, use script blockers on browsers, etc. I used to run avast and malware bytes, etc but for at least a few years now windows built in protection has been enough.
If OP is asking these questions it means they are probably capable of getting her setup with a system that is a bit cleaner and stays clean assuming she doesn't start downloading random weird porn shit or something.