From the top of my head. All the MCU films I seen were
Thor films, Captain America Trilogy, Guardians Trilogy, The Avengers, Age of Ultron, Ant-Man 1 & 2, Doctor Strange 1 & 2, Spider-Man Trilogy, Black Panther, Infinity War, Captain Marvel, Black Widow, Bulletproof Monk 2, and Eternals.
Guardians Trilogy were my favorite of the punch. Enjoyed the Captain America Trilogy, The first and second Avengers films, first Doctor Strange. Enjoyed the first Thor and find Dark World underrated and overhated. Black Panther was good but not great. Infinity War I find ok but very overrated. Endgame is extremely overrated, don't hate the film but I don't like it. First two spider-man films were timewasters at best IMO, wasn't a fan of No Way Home.
The rest of the films I didn't like or hated. Eternals was especially a snoozefest. Bulletproof Monk 2 I thought was personally meh. Doctor Strange 2 sucked (They totally butchered Stephen Strange's character) just to name a few.