I need help…

The last week this feeling and these thoughts has been consuming me, The thought of what happens after I die. For context I’m agnostic/atheist, I believe in ghosts and I would like to believe in reincarnation but the thought of sleeping being so similar to death and how you just wake up the next day not really remembering anything but falling asleep a few hours ago is scary. I feel so lost but not depressed, maybe this is what depression feels like??? Idk the thought of death and not really having anything after it is making me spiral into a pit I wish never existed. I’ve been losing sleep and happy experiences because of it. I feel like the only time it’s not in my mind is when I’m at school with friends or when I’m with my family, but I still need that alone time but that’s when the thoughts come back to me, I feel burnt out by the thoughts but also by being around people all day. But that’s how I’m distracted. And if I’ll just end up dying some day what’s the point of anything now? I know I should “live in the moment” but what’s the point of living in the moment if all of that can crumble in an instant…?