Don't feel bad about it game. Can't help it. When someone flings their luck in front of your face for long enough, while you swim in shit the depression accumulates and grows into resentment.
The important thing is to differentiate between those feelings and knowing that its purely situational thing that will pass away once you get a bit of luck yourself, and also for the other party to not make a big deal out of it, as this happens to EVERYONE eventually, and that those feelings are not personal and directed towards the person directly rather towards the game medium and the overall state of the situation.
I am guilty off this too, but that doesn't mean I am gonna make excuses or alternatively humble myself into the ground. It is what it is.
Shit happens, shit explodes, shit gets resolved and as long as everyone takes it with a grain of salt and doesn't take things personally, shit will settle down and once calm things continue just like before. Normal people don't wanna be offensive to others nor wanna keep taking offense. We are social creatures and for the most part we want to get along.
I mean its the same thing like with people who need their morning coffee, or chocolate, or drink after work. This game is technically gambling and it scratches that particular itch subconsciously. And if you don't get your "shot" of whatever it is that scratches your itch (like the examples I just mentioned) the withdrawal symptoms start to slowly accumulate. Add to that the disappointment, and jealousy which is normal human emotion (not a good one, but it is the same for everyone regardless) and it brews into a rather ugly cocktail.
Once over and poured into the drain, you´ll just have to say your piece, to let the other party know there were no hard feelings, shake hands and keep on moving. That's how we do it.