I'm not a fan of stories where you gradually learn that a character has a history/past of excellence at a particular skill/sport/art that they abandoned for "reasons", only for them to have to whip out said skill in a crucial time of need, thereby reconnecting with a part of themselves that they had tried to run away from.
Basically the girl in Jurassic Park 2 who uses her gymnastics to kill a raptor.
I also dislike "Chosen One" stories. More Neville Longbottoms, less Harry Potters. I also feel like indulgent overblown "world-building" is becoming a lame tropey thing.
A trope that I like is characters purposefully bringing themselves or someone else, to a state of near death in an attempt to see/describe what the afterlife is like. Flatliners, Martyrs, The OA, etc. have gone there. I also wish there was more media about reincarnation and people finding each other across life spans, like in Cloud Atlas and David Mitchell's other books. (Though I hate protagonists who are secretly reincarnations of gods or something silly like that).