Does anyone else feel sad when they’re alone

Hi

Why am I sad at night? It’s not that I’m sad for a particular reason or that I’m upset to be alone because I don’t mind being by myself in the daytime. But then when nighttime hits, I get extremely sad, sometimes crying-sad. And this only happens when I’m alone.

I could just be distracting myself when I spend the night with someone and that’s why I’m not sad. I just want to fall asleep immediately so I can avoid these feelings and wake up happy again.

Do any of you guys also experience this? What can I do to help this?