So many good ones I can’t pick just 3. But I really disliked Endgame.
The first Thor is a classic by a great director. Love both Guardians. Original Iron Man terrific.
Don’t forget how forgettable Age of Ultron is. The Hulk with Jennifer Connelly is in a class of bad all by itself.
Infinity Wars was great. Endgame such a disappointment.
I generally echo your sentiments.
I left Thor (I) out of my top three for one reason:
The fight with the Destroyer was anti-climactic and perfunctory. It should have lasted another ten minutes and been the centerpiece of the movie.
Long ago (mid 60s), I was a young boy waiting for my mother in Stanford Hospital, where she was a volunteer. I had just bought the Thor Annual (more pages) with my meager earnings. It was the fight between Thor and the Destroyer. He/It had the power to kill Thor, and actually damaged Mjolnir.
In the movie, once Thor regained his godhood, he made short work of the dreaded android.
(It came out years later that Odin created the Destroyer to protect Midgard/Earth from the Celestials, beings more powerful than Thanos.)