Black Widow is the better movie. In the list that is the MCU though it is somewhere in the middlle of the MCU's 20+film canon.
WW84, which I only just saw a few weeks ago is a bit goofy and silly. Not knowing if that is on purpose or not is a question I have. I didn't hate it and it is miles better than Birds of Prey: EoHQ or Suicide Squad which are horrid DCU films.
Someone said the first WW is better than both of them...and that poster is correct. The irony that WW plays so much like Captain America First Avenger is also not lost on me and I really like that origin film.