Rocket League - I've probably played over 300 hours of it but I still can't only get a Gold ranking...... but I still love it and its the best sports game I've ever played
Love me some Tekken, but oh boy am I trash at it.
The entire shoot 'em up genre. Love the heck out of em, but I can't really commit to one game to really get good at them.
you can do it though if you keep a dream alive in your heartSpelunky. I don't even try to get to Hell on runs anymore.
The DJ Max series might apply here. I love rhythm games and I'm pretty good at them, but once you incorporate more than 4 main buttons (left, up, triangle, and circle usually), I fall apart real quick. Compared to some of the godlike people abroad and here in the US, I'm garbage.
I suck at most games I really like.
All Cave shmups.