You didn’t get doxxed, that’s something different. That’s when your private info gets stolen and exposed to the public in an attempt to damage your image (as an example)

I think this was a denial of service attempt where the person sent a large number of packets to your public router to overwhelm the hardware for a few mins. It’s unlikely that they have the money or resources to sustain this attack though.

Given they may know your public IP or router’s DNS name, make sure you don’t have remote management enabled, change default password and maybe (if available) turn on DOS protection and disable ping response from WAN.

Not super relevant here but fyi 2 antiviruses isn’t better than 1. Sometimes they conflict and can cause neither to work properly.