https://www.lifehacker.com.au/2017/11/diplomacy-the-most-evi...
I wonder if that is a learned skill or a personality trait? In the former case, it might be valuable to teach it.
As an adult you can try to online versions where you only do one move per x(usually 24) hours. The games last weeks but you can play remotely at your leisure.
However, if you play lots of games, and never get off the British Isles, you might want to look for a different hobby.
The game is meant to be hard: after all at most one in seven people can win. (Unless you are a drawmonger and consider that an acceptable outcome.)
The only true dick move in the game is to trade away all of a certain good in lucrative trades, and then take it all back with a monopoly card. Most people have enough decency not to do that. Then again, at my house, we play it in a fairly friendly way and don't try to cripple each other unless we have to.
The one time we tried Catan I gave up not because the adults couldn't hack it but because my teenage cousins insisted on being involved but couldn't sit still long enough to set up the board and make it through a turn.
So for me the cultural conflict isn't about European vs American values reflected in game play as much as some people who need constant stimulation and have no patience. Considering the ubiquity of phones, ipads and the internet I'm not sure that ADD-like inability to focus is uniquely American. I think these games can also help teach kinds to slow down, decompress and pay attention if given a enough time but at least in my case I see these guys once a year at Thanksgiving which is not enough.
But glomming onto something mentioned in the article Mah Jong is popular with us because who wins isn't obvious until the game ends and who has the highest score may not be the person who declares Mah Jong. That makes the game more fun because everyone's involved to the end and it adds a layer of strategy as you're not just trying to up your score but block score-increasing moves by others.
Dealing with both of those things is part of the game... But I prefer games with less emphasis on those aspects.
Maybe you would not mind these forms of interaction so much in a game that is more upfront about them? On the surface, Catan seems to be almost cooperative, I could imagine the "politics" to catch some players by surprise, over and over again. Something with a darker theme might help to put some distance between personal relationships and gametable betrayals.
Junta for example, my all time favorite despite some really crude game mechanics is all about bought loyalties and backstabbing (or maybe I like it because of the crude mechanics, there is even an annoying Risk minigame that occasionally pops up to completely change the pace) Informal alliances sometimes rise and fall apart before the even first turn is over.
It sucks if you were one of the two players who didn't get a chance to place - but it doesn't feel quite as shitty as when someone occupies the only worker spot for a particular tile, just to spite you.
Of course, this is still boring for a completely different reason.
Even with that rule, we usually only use the robber to hurt the leader. During the early game when nobody is clearly ahead, we prefer to place it on poor production fields, and use it just to steal a card.
This is not just fuzzy feel-good pacifism, it's good sense, because an enemy is not an asset, and it's harmful to make yourself a target. Hurt people who deserve it, but otherwise just go for the card.
My father once caused a game-long shortage of bricks and nobody - including him - was able to do anything. Lol. :-)
Hence the memes: https://imgur.com/a/tUGcn