I can just imagine your additional frustration after Wimbledon 2019 final. Just relax, your opinion is not so much important and you don’t know any of these three guys personally so you can not judge them.
What you see on TV is not relevant.
Be reflexive and try to imagine how you would behave when you could get an opportunity to win 3.000.000$ in the final.
I bet everyone would be the rudest person in the world, even if their sister/brother is on the other side of the net. When we get competitive on this highest levels there is no room for kindness, because the goal must be achieved.