Thinking about them just in terms of their visual appearnce, Saoirse Ronan probably should have played Queen Elizabeth I instead of Mary, and Margot Robbie probably should have played Not In This Movie.
Perhaps it could have performed better, had it not come out the same year as both Outlaw King and The Favourite, as its content lies somewhere between the two, but its quality pales to either.
Final rating:★★ - Definitely not for me, but I sort of get the appeal.