IMDB genericizes this movie as "Biography, Comedy, Drama". You might think "comedy" is a stretch. I think "Tragedy" might be most apt, but I don't know if they have that. According to the IMDB parental guide, the f-bomb rate is in the neighborhood of one per minute, which counts (according to the MPAA) as "pervasive language".
Margot Robbie, in the title role, was Oscar-nominated for Best Actress. Alison Janney won Best Supporting Actress for her role as Tonya's mom.
And, unless you've been living in a cave for a few decades, you know the story: Tonya Harding's rise and disastrous fall in the hypercompetitive world of American figure skating. Obstacles? You bet. Foremost is her very-low-class origins, from a broken home and a psycho super-abusive mom from hell. (Who, nevertheless, gets Tonya enough coaching and backing to propel her into the upper reaches of competition, so it's a mixed bag.) Judges are biased against her, although that's claimed from her POV, so who knows?
In addition, Tonya sets up her own problems: she's dishonest, makes dreadfully poor life choices (notably: husband Jeff Gillooly), has zero impulse control, and dysfunctional in many other ways.
So: spoiler alert, she flames out badly, and the only surprise is how far she gets before it happens.
The movie is well-done, but I had to balance that against the lack of sympathetic characters.