Windows Defender is actually quite good these days. The main reason an enterprise would use a 3rd party AV/Firewall would be centralized management of said av and firewall. If IT needs to install apps and make them work, they also need the ability to manage the AV/Firewall.
I have the wired version of these Hearprotek earbuds, and they are amazing. The earbud is so small it doesn’t reach past my ear, and they are some sort of soft silicon, so they dont bother my ears when sleeping on my side. I went through dozens of “sleep earbuds” until I found these. https://a.co/d/0a7kYUM