Lost best friend

I’ve lost my best friend and as a single parent it’s hard to find friendships that can offer the emotional support I need right now. I have casual friends I’d get a drink with, but not a friend I can call upset about the breakup. I don’t want to burden my casual friends with trauma dumping and I’m scared to lose the few connections I still have. I want to remain single and try to find/build those friendships but it’s so hard.