Can't think of anything off the top of my head.
In fact, at the moment there nothing I can think of that I'm bad at that I enjoy all that much genre wise. The closest to games I can say is a single game series, (where they all pretty much play the same) and that is Tekken. And I don't necessarily suck at it, I'm just not good at it. I can get the occasional win if I really put in the effort and pick the characters I'm at least somewhat familiar.
Problem is I usually gain enjoyment from IMPROVEMENT in games. Sure, victories are satisfying, but even winning gets stale if you can't sense any improvement. I know, I quit games because of it. I reach my 'roof' and quit since there is nothing mentally stimulating or challenging anymore. Its either so easy its boring, or so hard its stupidly frustrating (which is also boring).
So what happens is I play a genre a lot until I get good at it because I see ways in which I can improve. Tactics (of the large and small scale) I can learn to improve my abilities. There has to be a mechanical-sense to the games I play. Racing, Shooters, Action RPGs are all usually what I play and I'd say I'm decent at minimum at most of the games in these categories. Games I feel that have less cohesion and mechanical consistency I'm generally bad at. Games where you have to learn all the characters (fighting games) Games that require a constant change in thinking (puzzle games, where the literal definition of such it to not have much mechanical consistency), and most games of chance (52-card set games) I generally suck at and don't play unless friends or family drag me into them.
Of course there are exceptions. Like I said, I like Tekken, I also like Portal 1 and 2 (Puzzle), and I developed my own 52-card set game. But in general I don't bother with such genres.
That isn't to say there are genres that DO have mechanical consistency that I don't like to play. chief example would be RTS games. I feel very little enjoyment about sending little dots to go fight other dots on my behalf on a flat board, or how quickly I can move and click my mouse.
There are also genres that are basically on life support that I enjoy. 3D Platformers, Car Combat, Tactical Turn based games, and stealth focused games namely. They all have generally consistent mechanics as well.
I don't mind losing too much assuming there is something to be learned from the loss. Losses are bittersweet rather than just bitter. I don't like to win or lose in games of chance. I feel not satisfaction either way. I feel like I wasted my time, and I find it all to common for people to drag me into it. Usually people that I like (friends and family) that don't have the same attitude about improvement and just want to play a game against me where they have a chance, even if its just 50/50 luck. I feel cheated for both players when I play those games. Winner gets a false sense of satisfaction and the loser learns nothing from the pain of loss.