I recommend Aniara very strongly. Be warned: like The Lighthouse, it is about being confined, cut off from the rest of humanity, and things getting worse. I don't know why the two movies at the top of my watch list were thematically-linked with the imperative to isolate, but I'm grateful for them. Looking at art with a perspective on my present situation is usually helpful, even if the art itself is intense.
Additional warnings: sex, suicide, the unseen deaths of children and adults, active engagement with despair. But additional recommendations: The most important characters are all lesbian or queer women, and even though bad things happen to them it didn't feel tropey to me. Fascinating sci-fi setting and details. Beautiful language. Constructive-feeling reflections on real-life difficulties. An important movie along several axes.