You don't need fancy tools yet. Windows 11 has a built-in snitch. You press Ctrl + Shift + Esc . Task Manager opens.
You also see a new "unidentified" device on your local network. Wait, is that your roommate’s phone or a neighbor’s hacked camera? GlassWire shows you each device’s traffic. You block the unknown MAC address.
You want rules . You install NetBalancer. You set Chrome to "Limit to 5 Mbps download" and Steam to "Lowest priority." Your video call never stutters again, even while downloading a game.