I haven't watched the movie, but I don't mind spoilers, so I read you comment. I'm a christian trans woman, I have always felt that reality was never... Real. Or comprehensive. I sometimes feel like I can see things beyond it if I just let my mind wander, such as fire, bodies, blood and destruction, my one answer to "what if reality isn't real" was that I'm still in it and no matter what I gotta continue living in it. That answer doesn't always work though, sometimes "the call to the void" or what I sometimes call it "static" is stronger and takes over my mind.
I've thought about "escaping" reality many times, the people around me stopping me whenever it became bad. Sometimes that call is not free will at work, it's just... Desperation.
Adult content including gore, extreme violence and death of a person