There's a few marvel films that stink - but I think captain marvel's the worst. I liked Joker until the end when he turned full leave brittany alone...
For me it’s not quite the worst for me, and after going through all the films it ranks a bit lower than I thought it would.
My approximate MCU rankings based on how much I ‘continue to enjoy’ the 23 movies, from top to bottom:-
Infinity War (enjoyed this more than any other MCU film)
Avengers, Endgame
Winter Soldier, Guardians of the Galaxy (a couple of the best MCU films)
Civil War, Homecoming, Far From Home (the Sony films both have well developed villains imo)
Iron Man (for getting the ball rolling)
Black Panther, Doctor Strange (I’m liking Doctor Strange more now than when it originally came out)
Captain America, Captain Marvel, Thor, Ant Man, Ant Man and the Wasp (these are all average for me, but I still like them)
Iron Man 3, Guardians 2, Age of Ultron
Hulk, Dark World, Thor Ragnarok, Iron Man 2 (like Joker, I must be one of the few who didn’t care for Ragnarok, except for the action scenes)