hmm, hard to remember them all, but one I really hate is the "carnivourous guy" often seen in shoujo and BL
recently I started to rereading Maid-sama and, wow, I kinda forgot how much of an asshole Takumi was. Not even a fun asshole, he's straight up annoying with his constant actual creep behavior that gets excused because he is a hottie that is also a gary stu.
I also hate the "uwu I'm so helpless" heroine trope where she can literally never do anything to protect herself nor does she ever stand up for herself. at a point it just becomes soooo obnoxious with how pathethic and spineless she is, especially if she gets paired with a "carnivorous" character who rapes her or constantly sexually molests her and that is the reason she fell in love?????
I also hate the "first one always wins" trope, like, either the first female or male love interest that gets introduced automatically wins because that was the original plan, the author completely ignores all the build up and chemistry that they created with the other much better love interest because the first one is their favorite and they win even if they show next to no progression or all that much romantic development with mc.