I can’t sleep, am I alone?

I lost my mom in late 2022, I’m 15, and struggle with depression. I also struggle with sleeping.

When my mom died in the hospital, I was sleeping in her room. Every night I went to bed I would be terrified that I would wake up and she would be dead.

But still, 2,5 ish years since she died, I still have that exact feeling when I go to sleep. I can’t sleep. I’m exhausted. I take melatonin, but it doesn’t work. It’s 00:53 am rn, just finished crying my eyes out, dreading going to bed, but I have school tomorrow.

Has anyone else experienced this? That panicked feeling every time you go to bed every day?

I don’t know anyone that struggles with the same thing, and I feel alone. I just need someone out there to know how I feel.