Additional security needed for gaming on Windows 10 when using steam?

I know you say additional security software (virus, firewall, internet suite etc) is not needed if following what you’ve said in the course but what about gaming and using steam. I’m currently using Bullguard and the subscription is about to run out. I get the feeling Bullguard detects more intrusions than windows defender and firewall, or perhaps this is because Bullguard is the primary security software so it’s used as default before windows has a chance to detect issues. So is windows firewall and defender enough for gaming and steam?

thanks