Adult orphan :(

I never had a big family. It was just me, my mother and father. I am an only child, as was my mother. My dad had 1 brother who died before I was born. Also both sets of my grandparents died before I was born. So basically I have no siblings, aunts/uncles, cousins or grandparents. Now I have no parents either. My father died 3 years ago and I lost my mother 6 months ago. And I'm still in my 20s, not married and no kids. I'm basically alone in the world and I feel suicidal. I feel jealous seeing people with family when I have literally no family. Nobody to confide in, nobody to share my thoughts/feelings and worst of all, nobody to care about me. What's the point of life anymore! :(