“Breathe,” Andy Serkis’ directorial debut, is an undeniably well-intentioned film. Serkis directs this true story of the parents of one of his best friends and producing partners, Jonathan Cavendish, and he does so with sensitivity and empathy. It’s hard to even imagine making a film about your parents, much less if their story was this essential to the quality of life for disabled people. If you’re thinking that making a story about someone that important to you might lead to the air of simplification that comes with hero worship, you’re not wrong. Of course, Jonathan Cavendish and his best friend should place Robin and Diana Cavendish on pedestals as high as they can reach, but that approach doesn’t really allow for three-dimensional filmmaking. The result is a film that sentimentalizes and softens what was clearly a very difficult situation, turning something that should be effective and honest into something that too often feels manipulative. The performances and th