Black Widow
This is the one of the few marvel films that actually holds a special place in my heart and that I can watch again and again.
The intro song after the first minutes gives me chills everytime and I really like the dark backstory of these female assassins. Probably because it isn't that far from reality (I mean the human trafficking part).
Also it's refreshing to see against all these male lead, testosterone filled action movies where women are just wife, partner or escort lady. All of the above must be sexy of course.
Here the women actually wear protective gear, but also normal day to day outfits. We see them without extravagant makeup and they don't have to follow just one archetype and be either the smart, strong or the emotional crybaby girl but they can be versatile. It also doesn't end in a complete tragedy, so for me it's a perfect feel good watch.
And the men hated it when it came out so I will defend this movie to death.