Aftersun
As far as realism and parent-child dynamics go, this story is a masterpiece. A beautiful yet melancholic love letter to family vacations, to longing, to memory and most of all to loss.
Aftersun is shot so uniquely, with soothing colourful sights being replaced by retro, chaotic shots captured through a digital camera. The performances feel real, which helps in making the viewer understand and maybe even relate to the underlying struggle of both characters.
On top of that, the decision to include Under Pressure in the score, tying that specific part of the song to that specific scene, might be one of the most effective musical decisions a film has made in a long time.