I don't believe in a god or religion, but I'm more than open to the possibility that we are likely one of many planes of existence, though I think I might have an understanding of that phrase different to how most use it.
I mean it as in the likelihood of us being in some sort of simulation, possibly just by chance, possibly purposefully by something 'above' us. But I don't think I would owe any creator anything, I'm not going to give my loyalty or worship to anything that could create a world like this. And they would have equally as much chance of being what we would be to them to whatever could be above them, and so on. So I don't think it's possible for there to be a god, for me at least. If all that were true they might be a god to some, but to me they'd be down in the dirt with us, all our failures are theirs.
I am afraid of what could come after death, though I'm not convinced that fear comes from a place that makes sense considering my beliefs.
Though I also believe that the universe either only goes through one possibility or every single one, so whatever is true, I'm only along for the ride and have no real part in how it goes. If dying is the only option I have, I'll just have to wait and see what happens after.