The first few origin movies/phase one are fine. Thor is the weakest, and I have difficulty remembering what actually happened. Iron Man 2 is basically a repeat of the first. All three Iron Man movies have essentially the same plot, and it gets less good every time.
Avengers is hard to sit through. The characters are insufferable, and I don't like Coulson enough to feel anything when he bites it.
Winter Soldier is okay, but all the Russo Brothers movies are over-long and could easily be shortened with good editing.
Thor 2 is arguably the best Star Wars movie Disney has made and I don't get the hate for this film.
Guardians is fucking great, but bloated by the overarching plot.
Ant-Man is fucking great. It's probably the leanest film since Phase I and I like that, even if the ending is overstretched.
Age of Ultron I really liked. Overstuffed for sure, but having despised Avengers I it was a pleasant surprise. "Drama undercut with joke" is seriously starting to be a problem.
Civil War was really good, though again, overstuffed.
Doctor Strange was excellent, mind bending visuals and the balls to make a movie with a dick of a lead.
Black Panther was forgettable. but fine.
Guardians 2 was a weaker film than the first but I liked the Nebula/Gamora stuff and the soundtrack is better than the first.
Spider-Man Homecoming was pretty enjoyable, but the school stuff got old fast.
Thor Ragnarok was a fucking disaster. It was trying to be Guardians but fundamentally missed out on why Thor is funny when he is funny: because he's overly grandiose and comically serious. Too many jokes.
Infinity War was pretty good overall, but again: The Russos need to learn to fucking edit. Titan was unimaginatively designed, but overall good and with a strong ending punch.
Ant Man and The Wasp was fun. I like the promise of what the Quantum Realm/Microverse could lead to.
Captain Marvel surprised me. It's really disjointed but I felt like they stepped back the jokes a bit and acknowledged that weakness in the film when Jude Law tries to tell Brie Larson to be more serious. The soundtrack was surface-level cringey 90's stuff that undercut the movie, in contrast to the score which I enjoyed. Carol's flashbacks are pure cringe.
Haven't re-watched Endgame yet. Have seen Spider Man FFH, it was okay-ish.