To use NetLimiter 4, you would have to read up on how to use it - learn.
Otherwise, study up on other Windows OS -type firewall procedures.
But again, though Brave Browser updates may occur ‘at the wrong moment’ . . . your attempt to control the moment for a Windows OS machine, might lead to some tiny problem, where you thereafter have to update manually.
If you have any doubts, DO NOT try these procedures.
I would suggest you writing more meaningful titles when looking for help. Your title sounds more like a complaint than a request for help.
Also, I would like to point out that writing in caps is equivalent to shouting. I don’t think this community deserves that. We are here sharing our experiences for the benefit of all of us.
If your objective was to shout at the Brave developers, then should have contacted them directly. This is the “community”. We are users like yourself.
You could start by asking politely then stating what OS you are running. I myself am running Linux Mint 20.3 and it is totally up to me when and if I update I just get a notification that updates are available. As has been suggested you can disable auto update in flags but if you play around in there that is on your own head.