Your frustration is totally understandable here. I’m sorry that you’ve had to experience such a loss.
We have many red tails around and even a golden eagle on rare occasion. The coop sits on the lowest level of our hillside property, house is on the highest level. So I worry about predators when we’re not in yard.
We got one of those wavy men and keep it on while the flock forage in the yard. I believe it works as they’re out every day and no attacks. This is our first year with chickens so I hope our luck continues. We also have many coyotes around that could jump the fence. Not certain but I think it’s been a deterrent for them as well.
Our rooster would likely not fare well in fight with a hawk. Coward only goes after my 4 year old grandson not adults. He now gets locked up when kiddos are visiting. It’s either that or rehomed.
Good luck