I'm not sure if this is an existential crisis, or just my reality

To be lost without a clue, deeply alone, mood changing every minute because reality sinks in

And I'm just not the main character. I never will be. I'm some forgettable auxillary background character

And that's true for everyone, but is the deep seated dread that you truly don't matter also ever present?

Does everyone's heart feel like a shell of fear, worried that you're just here, existing instead of living?