
Here are some of the popular ones that are very different with plot twists:
Shingeki no kyojin
killing and stalking (this one is yaoi)
d.grayman
here are some other good mangas to try:
nanohana boys (not shonen ai or yaoi even though cover seems like it)
unordinary
lookism
black haze
Haikyuu
Dalsez
welcome to the ballroom
pandora hearts
Ajin
akame ga kill

I know what you mean. It happens when you've read / watched too many stories, because the thing is that no matter what, stories always tend to have a certain pattern to be enjoyable, because they need to maintain a certain pace to keep the person's interest. They can't be too random, too slow nor too rushed.That's why it's so difficult to come up with new interesting stories. I'm actually really good at predicting what's going to happen in movies, tv shows, books, anime, manga, anything with a story really because I've seen / watch so many, but I'm still able to enjoy them somehow. Something you can do is also maybe to change the genres for a while

dgrayman is boring
lookism was really fun but curently its becoming stale
I highly suggest welcom to the ballroom or ballroom e youkoso, I know it sounds cringy and lame, but trust me its beautiful. wouldve loved more it if it was yaoi tho
It's just me that are bored with the mangas? I mean, there are stories that im reading and i already know what is going to happen.Is the type of manga that i read or are all the mangas? I really need a new type or a break for a while.