I choose to use GNU/Linux instead of Windows, so this might be an additional option. GNU/Linux is easy to use and it's great for work/productivity unless you want to use your computer for gaming. I've been using Linux for years now and don't plan on going back to Windows (I might buy a new laptop with Windows just for the sake of playing PES).

Antivirus is great but it's also important to learn how to verify file signature. In case of DNS attack, an attacker could redirect you to their site to download a malicious file (which is created with the same look as the original), just like what happens with Electrum (not exactly the same but I hope people got the idea). There's a lot of tutorial on the internet about this, so maybe it's quite easy to learn too.