You apply different standards to "a famous tennis player" and to youself. Why is it so? Is "the GOAT" title next to your avatar name meaningful? I noticed, people on this forum are given various tennis titles according to their experiences. Your title suggests you're very experienced and very revered here, at least like Murray (or better, like Fed or Nad) in real tennis. So, given your equably "famous" status here, as a consequence, you should apply equal standard to youself and Murray. So, you should scold youself for your "pretty terrible" cursing.
If you chose not to scold youself, then stop scolding Murray because in such case you have no rights doing so. I don't care how you chose to behave and I even respect your choice (though I have to turn off my attention to avoid negative feelings it excites) but I hate when people apply double standards to themselves vs the others.