Inspired by the true story of Anthony Robles, who became an NCAA champion wrestler despite being born without a right leg, “Unstoppable Flixtor” is a crowd-pleasing drama anchored by a strong performance from Jharrel Jerome. From his breakout in “Moonlight” to his Emmy-winning performance in “When They See Us,” Jerome has proven himself one of the finest actors of his generation. He is a master of conveying depth of emotion and nuanced internal conflicts solely through his eyes and body language. While the role of Robles offers him the perfect vehicle for his immense talent, the film around him struggles to reach his same heights.