AITA for feeling betrayed and hurt after being ghosted by entire friends group for a year?

I was going through a really tough time last year, and my friends completely disappeared. Not a single text, call, or message. I was in so much pain grieving a loss that I wasnt in condition to reach out to anyone either, but if someone had made an effort, I would've responded. It's been a year now, and they're all still friends with each other - posting about their hangouts and life updates on social media. Not even a single person ttied to know my wellbeing and whereabouts. Meanwhile, I'm still dealing with the aftermath of what happened, and it's like I don't exist to them. AITA for feeling betrayed and hurt, and not trying to ammend from my end. I just dont know if i should move on and how?