Why won’t my baby say my name?

My baby keeps babbling lots of different sounds one of the common ones being Dadadadadada. She is 10 months now. But she never says Mama. Never once said anything that resembles it.

I was just wondering when should I expect to hear Mama? It confuses me since I would have thought she'd say Mama before Dada as I'm a SAH Mum so she sees me more and needs more from me?

I've read it could be at like 19 months, but that means waiting a whole 9 months to even hear her say my name. Did anyone else had to wait that long?