That sounds really tough man, I'm sorry to read this.
Feeling alone is painful. You'll find a way back though.
When you're physically sick (stomach flu or something nasty), you almost forget what it was like to be healthy. And when you're healthy, it's hard to imagine how shitty it was when you were sick.
I've found that it goes the same way with loneliness, anxiety, whatever the affliction. That better tomorrow is on its way