Hard to say, there have been so many, but a few low lights include the list below, all for different reasons. Some because they are outright terrible, others because of how disappointing they were vs my expectations or the hype:
Jack & Jill - Sandler at his worst, which considering his own competition, is some feat.
Deuce Bigalow: European Gigolo - feck off Rob Schneider. Immature beyond words.
Without Remorse (Michael B. Jordan) - Appalling paint by numbers action.
Matrix Resurrections - So bad it made Revolutions look good.
Tree of Life - I find Malick pretentious as it is. The Thin Red Line I enjoyed, but this was pretentious even for TM. Hated it beyond words.
The Irishman - So much hype, but a big let down. Se Niro looking like an OAP kicking someone made me laugh.
Spiderman: No way Home - People went nuts for it, but found the rehashed villains and old Spideys to be shite. Maguire was particularly terrible and wooden. Showed how much better at acting Garfield is at least, so annoyed me Maguire took the plaudits. He was trash.
F9 (Aka Spaceballs) - Stupid even by F&F standards, which is saying something. Maybe the worst big budget franchise in history, and it hit a new low in trash cinema. Vin Diesel is the worst.
Gunpowder Milkshake - No words. Just maybe the worst film I’ve ever seen. Can’t even remember it at all now. Just know it’s scorched in my brain as being offensively bad.
Big Budget Netflix - This is a category, not a movie, because there are a few. The Grey Man, Red Notice, and The Adam Project, all cost a fortune and are all terrible.
Those Who Wish Me Dead - Angelina Jolie as a rugged firefighter. Need I say more?
The Dark Tower - Hot, steaming Garbage
Batman vs Superman vs Martha - Just feck off.
Sucker Punch - More Synder bollocks. Just disgracefully bad. I wanted a written apology after sitting through the full 2.5 hours.
Bloodshot - What happens when you combine a human comic character with a comic book story. An abomination.
Morbius - Shit plot, shit effects, shit acting, shit writing, shit beginning, shit middle, shit end, shit Leto, shit after credits scene. Gets it 1 point (out of 10) for featuring Adria Arjona’s perfect behind.
The Jennifer Lawrence Files - When she isn’t pretending to fall over walking on to stage, or pretending to fall over walking onto stage again, she’s busy being the most overhyped, over exposed actor in the world. Irritatingly and mind numbingly smug, not a particularly great actor, and even manages to have a dedicated following due to her “hotness”. Which doesn’t exist. So I automatically hate nearly anything she’s in. Chris Pratt is currently hot on her heels for over exposure, limited talent, non existent sex appeal, excessive hype, and time continuum bending levels of smugness.
Idiocracy - Has somehow achieved cult status, perhaps for the potentially interesting core conceptual idea, but is somehow a close rival to the Deuce Bigalow series for most immature, unfunny “comedy” I’ve ever seen. An hour and a half of fart, dick, and dumb jokes. A truly nails on chalkboard viewing experience. You’d actually have to question the sanity or intellectual stability of anyone who enjoyed this film.